Adjust labeler config and ddev tests to how pyyaml indents lists

[iliakur]

What does this PR do?

• We update the labeler config to satisfy the validation.
• We change our tests so that they catch this next time it changes from under us.

Motivation

Prevent folks who are submitting new integrations from having to deal with indentation in their PRs.

Additional Notes

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Changelog entries must be created for modifications to shipped code
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.63%. Comparing base (fe2c262) to head (e21c421).
Report is 1 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
activemq	?
cassandra	?
ddev	88.02% <100.00%> (+0.67%)	⬆️
hive	?
hivemq	?
ignite	?
jboss_wildfly	?
kafka	?
presto	?
solr	?

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