https://openshift-gce-devel.appspot.com/build/origin-ci-test/pr-logs/pull/17385/test_pull_request_origin_extended_clusterup/100/

-- Checking for openshift/origin:v3.8.0-alpha.0 image ...
Pulling image openshift/origin:v3.8.0-alpha.0
FAIL
Error: error pulling Docker image openshift/origin:v3.8.0-alpha.0
Caused By:
Error: repository name must be canonical

post-rebase issue

cc @openshift/sig-master