Merge pull request #2930 in SNORT/snort3 from ~MMATIRKO/snort3:snort_docker to master

Merge pull request #2930 in SNORT/snort3 from ~MMATIRKO/snort3:snort_docker to master

Squashed commit of the following:

commit d3a7ea0a8a94c50ca91bd3bb45be34337a8e8721
Author: Michael Matirko <mmatirko@cisco.com>
Date:   Thu Jun 10 11:03:41 2021 -0400

    main: implement test_features run flag to enable debug-like output

commit bdb3926895abb3d78dbc27046430d48c0bdd10cc
Author: Michael Matirko <mmatirko@cisco.com>
Date:   Fri Jun 4 11:38:12 2021 -0400

    sfip: fix unit tests for non-regtest builds

commit 2afa7a822c85641dbb7acaf9585b86781968baa9
Author: Michael Matirko <mmatirko@cisco.com>
Date:   Thu Jun 3 15:58:32 2021 -0400

    snort2lua: remove footprint size config