Merge pull request #59 from openshift-bot/art-consistency-openshift-4…

….8-cluster-policy-controller

Updating cluster-policy-controller builder & base images to be consistent with ART

Dockerfile.rhel

@@ -1,4 +1,4 @@
-FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.15-openshift-4.8 AS builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.16-openshift-4.8 AS builder
 WORKDIR /go/src/github.com/openshift/cluster-policy-controller
 COPY . .
 RUN make build --warn-undefined-variables