[#1386] Addressed review comments for !976

doc/examples/kea4/all-keys.json
doc/examples/kea6/all-keys.json
doc/sphinx/arm/dhcp4-srv.rst
doc/sphinx/arm/dhcp6-srv.rst
src/lib/dhcpsrv/network.h
src/lib/dhcpsrv/tests/dhcp_parsers_unittest.cc
    fixed typos

[#1386] Updated kea-dhcp4/6 arm

   Added ddns-use-conflict-resolution doc to the ARM

[#1386] kea-dhcp4/6 now parse ddns-use-conflict-resolution

Both servers parse and store ddns-use-conflict-resolution but
do nothing with it.

doc/examples/kea4/all-keys.json
doc/examples/kea4/with-ddns.json
doc/examples/kea6/all-keys.json
doc/examples/kea6/with-ddns.json
    Added entries for ddns-use-conflict-resolution

src/bin/dhcp4/dhcp4_lexer.ll
src/bin/dhcp4/dhcp4_parser.yy
src/bin/dhcp4/json_config_parser.cc
src/bin/dhcp4/tests/get_config_unittest.cc
    Added support for ddns-use-conflict-resolution

src/bin/dhcp4/tests/get_config_unittest.cc.skel
    Changed important calls to ASSERT_NO_THROW_LOG to ease debugging

src/bin/dhcp6/dhcp6_lexer.ll
src/bin/dhcp6/dhcp6_parser.yy
src/bin/dhcp6/json_config_parser.cc
src/bin/dhcp6/tests/get_config_unittest.cc
    Added support for ddns-use-conflict-resolution

src/bin/dhcp6/tests/get_config_unittest.cc.skel
    Changed important calls to ASSERT_NO_THROW_LOG to ease debugging

src/lib/dhcpsrv/parsers/base_network_parser.cc
    Fixed copy/paste error

[1386] Added support for ddns-use-conflict-resolution to dhcpsrv

src/lib/dhcpsrv/network.*
    Added Network::ddns_use_conflict_resolution_

src/lib/dhcpsrv/parsers/base_network_parser.cc
src/lib/dhcpsrv/parsers/simple_parser4.cc
src/lib/dhcpsrv/parsers/simple_parser6.cc
    Added "ddns-use-conflict-resolution"

src/lib/dhcpsrv/srv_config.*
    Added DdnsParams::use_conflict_resolution_

src/lib/dhcpsrv/tests/dhcp_parsers_unittest.cc
src/lib/dhcpsrv/tests/network_unittest.cc
src/lib/dhcpsrv/tests/srv_config_unittest.cc
    Updated tests

[#1386] Addressed review comments

src/bin/d2/d2_update_mgr.h
src/bin/d2/simple_add.cc
    Fixed mispellings

src/bin/d2/tests/d2_update_mgr_unittests.cc
    Fixed compiler warning/errors for unused variables
    Fixed mispellings

     // and sent the DNS request.
src/bin/d2/tests/nc_remove_unittests.cc
    fixed copy-paste typo

src/bin/d2/tests/nc_test_utils.cc
    Added commentary, removed superfluous whitespace

src/bin/d2/tests/nc_test_utils.h
    Fixed mispellings

src/lib/dhcp_ddns/ncr_msg.*
    Fixed mispellings

[1386] Made NCR use-conflict-resoltuion optional

NCR parameter, use-conflict-resolution, now optional with a
default to true for backward compatibility.

src/lib/dhcp_ddns/ncr_msg.cc
    NameChangeRequest::fromJSON() - made use-conflict-resolution
    option, defaults to true.

src/lib/dhcp_ddns/tests/ncr_unittests.cc
    TEST(NameChangeRequestTest, useConflictResolutionParsing) - new test

[1386] Made SimpleRemoveTranscation explicitly deletes PTR,DHCID RRs

src/bin/d2/d2_update_mgr.*
    Fixed copyright
    Updated commentary

src/bin/d2/simple_add.h
    Updated commentary

src/bin/d2/simple_remove.cc
    SimpleRemoveTransaction::buildRemoveRevPtrsRequest() -
    now explicitly deletes PTR and DHCID RRs

src/bin/d2/simple_remove.h
    Updated commentary

src/bin/d2/tests/nc_test_utils.*
    checkSimpleRemoveRevPtrsRequest() - new function

src/bin/d2/tests/simple_remove_unittests.cc
    updated tests

[#1386] D2 supports add and remove without conflict resolution

src/lib/dhcp_ddns/ncr_msg.*
    Added NameChangeRequest::conflict_resolution_

src/bin/d2/d2_update_mgr.cc
    D2UpdateMgr::makeTransaction() - use's the NCR's value for
    use-conflict-resolution() in determining which type of transacation
    to create.

src/bin/d2/simple_add.* - new files
    SimpleAddTransaction() - new class which executes a DNS add
    without conflict resolution.

src/bin/d2/simple_remove.* - new files
    SimpleRemoveTransaction() - new class which executes a DNS remove
    without conflict resolution.

src/bin/d2/tests/simple_add_unittests.cc - new file
    Tests SimpleAddTransaction

src/bin/d2/tests/simple_remove_unittests.cc - new file
    Tests SimpleRemoveTransaction

src/bin/dhcp4/tests/d2_unittest.cc
src/bin/dhcp6/tests/d2_unittest.cc
src/bin/d2/tests/d2_process_unittests.cc
src/bin/d2/tests/d2_queue_mgr_unittests.cc
src/bin/d2/tests/d2_update_mgr_unittests.cc
src/bin/d2/tests/nc_add_unittests.cc
src/bin/d2/tests/nc_remove_unittests.cc
src/bin/d2/tests/nc_trans_unittests.cc
src/lib/dhcp_ddns/tests/ncr_udp_unittests.cc
src/lib/dhcp_ddns/tests/ncr_unittests.cc
src/lib/dhcpsrv/tests/d2_udp_unittest.cc
    updated tests

[#1299] document host reservations

Fixed adding vagrant user to abuild group on Alpine

[#1423] Addressed comments

[#1423] Addressed comments

[#1423] Protected all tests against free content

[#1423] Addressed (cosmetics) comments

[#1423] Complete authoritative

[#1423] Checkpoint: finished code

[#1423] Checkpoint

[#1423] Checkpoint: test keyword sets

[#1459] Added some text in libprocess.dox

[#1459] Changed redirect for set_logger

[#1459] Redact CA basic HTTP auth passwords in logs

[#1450] Added KEA_LOG_CHECK_VERBOSE env var

[#1450] Reverted response_creator_unittests.cc

[#1450] Fixed ChangeLog

[#1450] Added LOG_CHECK_VERBOSE flag for review

[#1450] Moved authorized log to INFO

[#1454] fix PDExclude fields in example JSONs

excluded prefix length should be higher in value (smaller in address space)

[#1469] fixed warnings

[#1469] addressed comments

[#1469] added missing entries

[#1469] added missing entries

[#1469] added missing entries

[#1468] Corrected typo in ChangeLog

[#1468] Added ChangeLog for #1468

[#1468] Fixed compilation of cfg_db_access tests

[#1428] Addressed review comments

[#1428] Added ChangeLog for #1428

[#1428] Updated HR for DHCPv6

Described the use of ip-reservations-unique global parameter. In addition,
the corresponding DHCPv4 section was slightly updated.

[#1428] Updated ARM for DHCPv4

Added a section to the DHCPv4 host reservations section which describes
how to enable using multiple reservations for the same IP address.

[#1451] allow linking with libgtest.so

[#1385] Wrapped new ChangeLog entry (2)

[#1385] Wrapped new ChangeLog entry

[#1385] Regen flex/bison

[#1385] Regen flex/bison

[#1385] Updated ARM and added a ChangeLog

[#1385] kea-dhcp6 supports ddns-update-on-renew

    (Parsers need to be regenerated)

    src/bin/dhcp6/dhcp6_lexer.ll
    src/bin/dhcp6/dhcp6_parser.yy
    src/bin/dhcp6/json_config_parser.cc
        added ddns-update-on-renew parameter

    src/bin/dhcp6/dhcp6_srv.*
        Dhcpv4Srv::createNameChangeRequests() - modified to
        use ddns-update-on-renew in logic

    src/bin/dhcp6/tests/fqdn_unittest.cc
        TEST_F(FqdnDhcpv6SrvTest, processRequestRenew) - new test

    src/bin/dhcp6/tests/get_config_unittest.cc
        Updated

    doc/examples/kea4/all-keys.json
    doc/examples/kea6/all-keys.json
        added ddns-update-on-renew parameter

[#1385] kea-dhcp4 supporst ddns-update-on-renew

(Parsers need to be regenerated)

src/bin/dhcp4/dhcp4_lexer.ll
src/bin/dhcp4/dhcp4_parser.yy
src/bin/dhcp4/json_config_parser.cc
    added ddns-update-on-renew parameter

src/bin/dhcp4/dhcp4_srv.*
    Dhcpv4Srv::createNameChangeRequests() - added DdnsParams
    argument and modified to use ddns-update-on-renew in logic

src/bin/dhcp4/tests/fqdn_unittest.cc
    TEST_F(NameDhcpv4SrvTest, createNameChangeRequestsUpdateOnRenew)
    - new test

src/bin/dhcp4/tests/get_config_unittest.cc
    Updated

src/lib/dhcpsrv/network.*
src/lib/dhcpsrv/parsers/base_network_parser.cc
src/lib/dhcpsrv/parsers/simple_parser4.cc
src/lib/dhcpsrv/parsers/simple_parser6.cc
src/lib/dhcpsrv/srv_config.*
    Added ddns-update-on-renew

src/lib/dhcpsrv/tests/dhcp_parsers_unittest.cc
src/lib/dhcpsrv/tests/network_unittest.cc
src/lib/dhcpsrv/tests/shared_network_parser_unittest.cc
src/lib/dhcpsrv/tests/shared_network_unittest.cc
src/lib/dhcpsrv/tests/srv_config_unittest.cc
src/lib/dhcpsrv/tests/subnet_unittest.cc
    updated tests

[#1464] Addressed comments

[#1464] Added RAII tool to fill holes

[#1428] Make test class destructor virtual

Also, committed regenerated dhcpsrv_messages.[cc|h].

[#1428] Addressed review comments

- Note that IP reservations are unique with a subnet in several places
- Put back const in createManagers function
- Aligned log arguments.
- Added missing commentary in v6 config fetch routine.

[#1428] Regen flex/bison

[#1428] Added ip-reservations-unique to all-keys

[#1428] Added warn when switch ip-reservations-unique

[#1428] Regenerated parsers for DHCP

[#1428] Setting ip-reservations-unique via CB

[#1428] Extend createManagers function tests

Extended the tests of the createManagers function which instantiates
configured host backends. It now checks that it is possible to use
ip-reservations-unique for MySQL and Postgres but this setting is refused
for CQL.

[#1428] Use ip-reservations-unique in alloc engine

[#1428] Configure unique IP in HostMgr

The CfgDbAccess class configures HostMgr according to the setting of the
ip-reservations-unique.

[#1428] Basic support for ip-reservations-unique

The DHCPv4 and DHCPv6 servers accept ip-reservations-unique configuration
for IP addresses specified in the configuration file.

[#1428] Added ip-reservations-unique parameter

Also regenerated parsers.

[#1441] AUTHORS file updated

[#1441] add ChangeLog entry

[#1441] document various MAC formats for RADIUS

[#1441] fix invalid ARM mysql code-block

not getting validated by pygmentize 2.7.1 or higher versions

[#1428] Fixed nits as a result of review

[#1428] Removed tests dedicated for cache

Since we have removed support for getAllX(subnet_id, address) the
tests that validate them were also removed. These tests were recently
added when there was a concept that getAllX behaves the same as getX,
but that is no longer true.

[#1428] Renamed some unit tests

As a result of review.

[#1428] Copied missing PgSQL host tests

[#1428] Removed spurious blank line

As a result of review.

[#1428] Fixed comment in a new test

As a result of review.

[#1428] Modified query to use lower case table name

As a result of review.

[#1428] Added missing comment

As a result of review.

[#1428] Final code cleanup

- Removed caching from getAllX functions in HostMgr
- Renamed setIPReservationUnique to setIPReservationsUnique

[#1428] Extended host tests

The tests getting host by subnet_id/address were now extended to also
use the getAll4 and getAll6 variants.

[#1428] Fixed read only tests in MySQL and PgSQL

Per review comments.

[#1428] Added override in CQL backend

[#1428] Set unique hosts in backend tests

Per review comments.

[#1428] Renamed test function

testAddDuplicate4 to testAddDuplicateIPv4 per review comments.

[#1428] Removed spurious blank lines

As a result of review.

[#1428] Improve non-unique reservations tests

The tests now verify that returned hosts are different. Also added a test
for prefixes. As a result of review.

[#1428] Fixed comments in pgsql hosts

Addressed minor comments in PgSQL host data source and added LIMIT 1 to
optimize a query.

[#1428] Fixed line break

As a result of review.

[#1428] Use SQL select 1 consistently

The new INSERT SELECT statements are also better described to explain why
SELECT 1 is used as a result of the review.

[#1428] Added comment for HostMgr::del func

The comment explains that only hosts from the first alternate source will
be deleted - per review comments.

[#1428] Added comments in MySQL and PgSQL backends

[#1428] Replaced 'including' with 'having' in msgs

Also added a new line per review comments.

[#1428] Simplified return statement

[#1428] Fixed some typos

- regarless -> regardless
- faciliate -> facilitate
- removed spurious blank line

as a result of review.

[#1428] Delete multiple hosts by subnet/addr

Adjusted behavior of the del(subnet_id, addr) function in MySQL and
Postgres to delete multiple hosts having the same IPv4 or IPv6 address.
The MySQL schema had to be updated to use CASCADE action rather than
trigger to remove dependent options and IPv6 reservations.

[#1428] Calls to fetch many hosts by id/address

The new calls have been added to the host backends to retrieve multiple
hosts by subnet_id and address.

[#1428] Allow non-unique IPs in MySQL and PgSQL

Introduced new host API function which allows for configuring selected
backends to accept non-unique IP reservations for multiple hosts. Support
for it was added in MySQL, Postgres and Kea config file. It is not
supported in Cassandra. New migrations for MySQL and Postgres have been
created.

[#1418] Fixed ChangeLog number

[#1418] Finished renames

[#1418] Regen flex/bison

[#1418] Checkpoint: more renames

[#1418] Checkpoint: renamed cache-max

[#1418] Regen flex

[#1418] Typo: regen again

[#1418] Regen flex/bison