Redis output integration tests improvements

[urso]

The PR #16206 adds support for URL based redis host configurations. The PR already adds these tests:

• integration tests for accessing redis with and without an URL schema
• unit tests to verify schema, url, and password are parsed correctly.

The redis test container used for testing does not configure a password. That is the testsuite currently does not check if authentication is working correctly, no matter how the password was configured.

TODO:

• setup containers with and without password (ensure we test both variants)
• add integration test using the password setting
• add integration test configuring an alternative password within the URL like redis://:<password>@<host>.

[elasticmachine]

Pinging @elastic/integrations-services (Team:Services)

[botelastic]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[elasticmachine]

Pinging @elastic/agent (Team:Agent)

[botelastic]

Hi!
We just realized that we haven't looked into this issue in a while. We're sorry!

We're labeling this issue as Stale to make it hit our filters and make sure we get back to it as soon as possible. In the meantime, it'd be extremely helpful if you could take a look at it as well and confirm its relevance. A simple comment with a nice emoji will be enough :+1.
Thank you for your contribution!