Cut down Examples to the current one in expanded Scenario Outline (#369)

[tyranron]

Resolves #369
Revealed from #369 (comment)

Synopsis

See #369 (comment):

Additionally, extend the filter_run and filter_run_and_exit methods to be able to no only filter by scenario name but also by example.

If I understand correctly, you also want the scenario.examples.table being cut down to the exactly one being executed right now. We currently don't do anything about them. Seems legit to shrink them.

Solution

Shrink Examples to the current one in the expanded Scenario Outline, so it could be obvious which example is running at the moment in filter_run() and filter_run_and_exit() methods.

Checklist

• Existing tests are updated
• New tests for filtering are added
• Documentation is updated
• Changelog is updated