ci: add ceph-csi-operator image

[iPraveenParihar]

Describe what this PR does

This failed to pull the quay.io/cephcsi/ceph-csi-operator: (without tag?) from the CI mirror. You will need to add the container-image to images.txt and wait until tomorrow to try again.

Originally posted by @nixpanic in #4947 (comment)

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List items that are not part of the PR and do not impact it's
functionality, but are work items that can be taken up subsequently.

Checklist:

• Commit Message Formatting: Commit titles and messages follow guidelines in the developer guide.
• Reviewed the developer guide on Submitting a Pull Request
• Pending release notes updated with breaking and/or notable changes for the next major release.
• Documentation has been updated, if necessary.
• Unit tests have been added, if necessary.
• Integration tests have been added, if necessary.

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[iPraveenParihar]

/retest ci/centos/job-validation