Feature: Add option to ignore ansible-lint warnings

[gl-njanz]

By demoting certain errors to warnings in ansible-lint (-w, warn_list:) I want to signify that I don't really care about those testcases.

AFAIK the behavior of ansible-lint is to append a string to the end of the line.

Test case

This output.txt:

somedir/somefile.yaml:16: yaml[line-length]: Line too long (313 > 160 characters) (warning)
somedir/somefile.yaml:16:16: yaml[line-length]: Line too long (313 > 160 characters) (warning)
somedir/somefile.yaml:16:27: yaml[line-length]: Line too long (192 > 160 characters) (warning)
somedir/somefile.yaml:16:27: yaml[line-length]: Line too long (192 > 160 characters) (warning)
somedir/anotherfile.yaml:7: package-latest: Package installs should not use latest.

Should result in the following XML output:

<?xml version="1.0" ?>
<testsuites>
        <testsuite errors="1" failures="0" tests="0" time="0">
                <testcase name="somedir/anotherfile.yaml-1">
                        <failure file="somedir/anotherfile.yaml" line="7" message="package-latest: Package installs should not use latest." type="Ansible Lint">package-latest: Package installs should not use latest.</failure>
                </testcase>
        </testsuite>
</testsuites>

[gl-njanz]

Hi @wasilak 👋 Is there anything you need from me to help get this merged? Just let me know!