Use separate test_operator artifacts basedir for update test run

[ciecierski]

Save test_operator test runs to separate test_operator_update dir to prevent overriding test_operators deployment run results with update run.

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• Appropriate testing is done and actually running
• Appropriate documentation exists and/or is up-to-date:
  • README in the role
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[github-actions]

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[raukadah]

/approve

[openshift-ci]

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[lpiwowar]

LGTM! 👍

This makes sense. We want to store the logs into a separate folder when running the test-operator after an update.

[lpiwowar]

/lgtm

[raukadah]

/cherry-pick 18.0.0-proposed

[openshift-cherrypick-robot]

@raukadah: new pull request created: #2207

In response to this:

/cherry-pick 18.0.0-proposed

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