* Allow sanity tests to easily ignore themselves.
Useful for simple regex based sanity tests that error on their own script due to the regex or error message generated.
* Simplify no-smart-quotes sanity test.
Pruning of unversioned directories is handled by ansible-test.
* Remove directory pruning from boilerplate tests.
Files not passing these tests should be ignored instead.
* Add missing sanity ignore entries.
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