Unable to fetch OCI containers from jfrog's artifactory

the sync openstack image script will fail when using with our internal artifactory mirrror with the following error:

error: Invalid URL 'Artifactory Realm': No scheme supplied. Perhaps you meant https://Artifactory Realm? This is due to some strange behavior in oras python client ( see : https://github.com/oras-project/oras-py/issues/182 )

We can either wait for the fix to land or use the code from the PR directly.