Merge pull request #1760 in SNORT/snort3 from ~MIALTIZE/snort3:decode_data to master

Merge pull request #1760 in SNORT/snort3 from ~MIALTIZE/snort3:decode_data to master

Squashed commit of the following:

commit 1d85480c83ac1167b16c01b34c6bc992a86f381e
Author: Michael Altizer <mialtize@cisco.com>
Date:   Mon Sep 16 21:09:22 2019 -0400

    codecs: Use checksum validation from DAQ packet decode data when available

    Supported protocols include IP, ICMP, ICMPv6, TCP, and UDP.

commit a42a81e8ca5e9c2950dc0c7762dd1b9cf3d052d4
Author: Michael Altizer <mialtize@cisco.com>
Date:   Mon Sep 23 17:25:43 2019 -0400

    protocols: Remove reference to obsolete DAQ_PKT_FLAG_HW_TCP_CS_GOOD flag

commit 8ffb5eeca3196e783a89f07ff2a1bd13037c2f25
Author: Michael Altizer <mialtize@cisco.com>
Date:   Fri Sep 6 16:45:05 2019 -0400

    unit-tests: Fix compiler warnings that snuck into CppUTest unit tests