Skip image-registry redirect test when non-permanent credentials used on GCP.
Skip image-registry redirect test when non-permanent credentials used on GCP.

The image registry only supports redirects with permanent credentials
on GCP. Short lived credentials (GCP workload identity) are being used
when the cluster authentication config contains a ServiceAccountIssuer
set to an OIDC endpoint rather than empty string. Check the cluster
authentication config for the ServiceAccountIssuer and skip the
redirect test when found for GCP clusters.

soltysh/origin,soltysh/origin,mfojtik/origin,openshift/origin,mfojtik/origin,mahak/origin,akram/origin,openshift/origin,akram/origin,akram/origin,openshift/origin,mfojtik/origin,mahak/origin,soltysh/origin,mahak/origin