tests: make warnings not produce a non-zero exit code, add 'ignore' command to tests, make shorewall optional.
tests: make warnings not produce a non-zero exit code

Change-Id: I60d51728128b95c77d52ab4e8c61966cfa59ff2f
tests: add 'ignore' command to tests

Change-Id: I8ac3b6edd6a0cf7eae5486d61d1680765a8fad13
tests: make shorewall optional

Change-Id: I1703ff7b3dafe5d0562a7c34c1851ebfedc569a8
Merge branch 'add_ignore' into develop
Merge branch 'make_shorewall_optional' into develop