[#4498] Fixed UTs

modified:   src/lib/dhcpsrv/tests/client_class_def_parser_unittest.cc
modified:   src/lib/dhcpsrv/tests/dhcp_parsers_unittest.cc
modified:   src/lib/dhcpsrv/tests/shared_network_parser_unittest.cc

[#4498] addressed review

[#4498] Fixed compilation error

modified:   src/lib/cc/simple_parser.h
modified:   src/lib/cc/tests/simple_parser_unittest.cc

[#4498] Addressed review comments

/src/lib/cc/simple_parser.cc
    SimpleParser::parseIntTriplet()
    - use new template function

/src/lib/cc/simple_parser.h
    rangeCheckedInteger() - new template function

/src/lib/cc/tests/simple_parser_unittest.cc
    TEST_F(SimpleParserTest, rangeCheckedIntegerUint32) - new test

/src/lib/dhcpsrv/srv_config.cc
    SrvConfig::rangeCheck() - use numeric_limits

[#4498] Catch negatiive lifetimes

/src/lib/cc/simple_parser.cc
    SimpleParser::parseIntTriplet() - modified to use range checked getInteger()

/src/lib/dhcpsrv/srv_config.*
    SrvConfig::rangeCheck() -  new function to range check an Integer element
    SrvConfig::sanityChecksLifetime() - modified to use rangeCheck()

/src/lib/dhcpsrv/tests/client_class_def_parser_unittest.cc
    TEST_F(ClientClassDefParserTest, negativeLifetimes4)
    TEST_F(ClientClassDefParserTest, negativeLifetimes6)
    - new tests

/src/lib/dhcpsrv/tests/dhcp_parsers_unittest.cc
    TEST_F(ParseConfigTest, negativeLifetimes4)
    TEST_F(ParseConfigTest, negativeLifetimes6)
    - new tests

/src/lib/dhcpsrv/tests/shared_network_parser_unittest.cc
    TEST_F(SharedNetwork4ParserTest, negativeLifetimes4)
    TEST_F(SharedNetwork6ParserTest, negativeLifetimes6)
    - new tests

/src/lib/dhcpsrv/tests/srv_config_unittest.cc
    TEST_F(SrvConfigTest, sanityChecksLifetime)
    - updated

[#4228] Updated firewall point

[#4168] added more UTs

[#4168] Added MT UTs

[#4149] updated ARM about classless-static-route option

[#4518] do not allow prefix option with invalid data

[#4518] addressed review comments

[#4518] added ChangeLog entry

[#4518] log warning for invalid prefix and prefix len pair

[#4329] Updated meson.build

[#4329] Checkpoint: began dhcp6

[#4329] Checkpoint

[#4329] Checkpoint: began src/bin

[#4329] Checkpoint before rebase

[#4329] Checkpoint

[#4329] Checkpoint

[#4329] Checkpont

[#4329] Checkpoint

[#4329] fixed remaining warnings

[#4329] Ported signed/unsigned to bin

[#4110] Updated 4507 ChangeLog

[#4110] Addressed comments

[#4110] Spelling

[#4110] Updated AUTHORS

[#4110] Updated ChangeLog

[#4110] Finished UTs

[#4110] Checkpoint: began UTs

[#4110] Checkpoint: UTs to do

[#4110] Checkpoint

[#4551] Updated ChangeLog

[#4551] Added a ChangeLog

[#4551] Improved lease check before add

[#4512] added ChangeLog entry

[#4512] properly handle stats on conflicting lease

[#4329] Standardized GSS UT

[#4329] Ported signed/unsigned to hooks

[#4329] addressed review

[#4329] Ported signed/unsigned to lib

[#4576] added ChangeLog entry

[#4576] addressed review comments

[#4576] handle empty buffer and empty option

[#4359] fixed doc

[#4507] Updated ChangeLog

[#4507] Improved new tests

[#4507] Fixed messages

[#4507] Improved fatal interface-add error

[#4329] Ported unsigned/signed compare to libdhcpsrv

[#4329] addressed review

[#4329] Ported unsigned/signed compare to libdhcp

[#4527] updated ChangeLog entry

[#4527] fixed perfdhcp

[#4499] added ChangeLog entry

[#4499] return empty string for null subnet

[#4329] fixed spaces

[#4329] Ported src/lib/util fixes

[#4582] Applied Andrei's patch

[#4582] Fixed easy doxygen complains

[#4530] check if subnet still exists

[#4486] updated doc

[#4508] addressed review

[#4508] Init allocators in lease mgr recreate()

/src/bin/dhcp4/ctrl_dhcp4_srv.cc
    ControlledDhcpv4Srv::processConfig() - set allocator init flag

/src/bin/dhcp6/ctrl_dhcp6_srv.cc
    ControlledDhcpv6Srv::processConfig() - set allocator init flag

/src/lib/dhcpsrv/lease_mgr_factory.*
    LeaseMgrFactory::init_allocators_  - new static flag

    LeaseMgrFactory::initAllocators() - new function that initializes
    lease allocators when static flag is true

    LeaseMgrFactory::recreate() - call initAllocators()

[#4527] fixed ci

[#4527] added debug log message on open socket

[#4527] proper poll on shutdown

[#4579] Fix data race in UT

modified:   src/lib/dhcpsrv/testutils/generic_lease_mgr_unittest.cc

[#3991] Some improvements

[#3991] catch all exceptions in destructor

[#3991] Suppressed 2 cppcheck complains in optional.h

[#3991] Added comments about cppcheck suppressions

[#3991] Updated C casts

[#3991] fixed more warnings

[#3991] Fixed cppcheck throwInEntryPoint (2)

[#3991] Fixed more cppcheck virtualCallInConstructor

[#3991] Fixed cppcheck throwInEntryPoint

[#3991] Fixed returnByReference in optional.h

[#3991] Fixed cppcheck virtualCallInConstructor

[#3991] Fixed CWE 398 iterateByValue

[#3991] Fixed CWE 398 cstyleCast

[#3991] Fixed CWE 398 3 uninitMemberVar

[#3991] Fixed CWE 563 3 unreadVariable

[#3991] Fixed CWE 398 uselessCallsSubstr

[#3991] Fixed CWE 398 2 dangerousTypeCast

[#3991] Fixed CWE 398 constVariableReference

[#3991] Fixed CWE 398 duplicateExpression

[#3991] Commented CWE 476 nullPointer

[#3991] Silent CWE 457 uninitvar

[#3991] Spelling

[#3991] Fixed CWE 570 unsignedLessThanZero

[#3991] Fixed CWE 563 unusedVariable

[#4358] Updated legacy (vs L2)  UT comment

[#4358] Fixed L2 relay support

[#4297] Typo

[#4297] Updated subnetX_select doc

[#4575] Bump up versions after release

[#4443] Changed to reset N

[#4443] Extended lenient parsing of  client fqdn options