The build system has adopted the Default Containerized Application Labels. So all the Dockerfiles are requested to update to the new style label. https://mojo.redhat.com/docs/DOC-1018140
Verified in rhgs-server-docker-3.1.3-15 LABEL architecture="x86_64" LABEL com.redhat.component="rhgs-server-docker" LABEL name="rhgs3/rhgs-server-rhel7" LABEL release="16" LABEL version="3.1.3" LABEL vendor="Red Hat, Inc" LABEL summary="This image has a running glusterfs service ( RHEL 7.3 + RHGS 3.1.3)" LABEL distribution-scope="authoritative-source-only"
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2017:0149