Updating ose-must-gather builder & base images to be consistent with ART#185

jupierce wants to merge 1 commit intoopenshift:masteropenshift/must-gather:masterfrom

jupierce:art-consistency-openshift-4.7-ose-must-gatherjupierce/must-gather:art-consistency-openshift-4.7-ose-must-gatherCopy head branch name to clipboard