switch to s3 bucket for OSBS build records

[ktdreyer]

For years we've stored container build records in https://file.rdu.redhat.com/~kdreyer/osbs/ . We have a better solution now. The records will be stored in this s3 location: https://s3.upshift.redhat.com/ceph-containers/index.html

Here is the JJB change that switches to the new s3 location: https://gitlab.cee.redhat.com/ceph/rhcs-jenkins-jobs/-/merge_requests/1492 . I have not merged it yet because I would like to give you some time to switch over to the new location.

For example, I see DEFAULT_OSBS_SERVER = "http://file.rdu.redhat.com/~kdreyer/osbs/" in this cephci repository. You should be able to parse the directory index with boto3 instead of htmllistparse. Maybe other QE tools will need to change also?

[github-actions]

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