Migrating to ansible-lint v6

[ssbarnea]

This is a living document aiming to prepare the migration guideline to ansible-lint v6.

• You will need python 3.8 and ansible-core 2.12 or newer
• Remove --parseable-severity switch if previously used
• Replace -p switch with -f pep8 if needed
• You might want to temporary add fqcn-builtin to skip-list as it become enabled by default.
• You might want to temporary add yaml to skip-list if you never used yamllint with ansible-lint before, as now is always enabled
• You might want to try --write option that will attempt to fix some basic problems and do reformatting, saving you from manually doing some boring tasks