Updating images/tests/Dockerfile.rhel baseimages to mach ocp-build-da…

…ta config

This PR is autogenerated by the [ocp-build-data-enforcer][1].
It updates the baseimages in the Dockerfile used for promotion in order to ensure it
matches the configuration in the [ocp-build-data repository][2] used
for producing release artifacts.

If you believe the content of this PR is incorrect, please contact the dptp team in
#forum-testplatform.

[1]: https://github.com/openshift/ci-tools/tree/master/cmd/ocp-build-data-enforcer
[2]: https://github.com/openshift/ocp-build-data/tree/openshift-4.6-rhel-8/images

images/tests/Dockerfile.rhel

@@ -1,11 +1,11 @@
-FROM registry.svc.ci.openshift.org/ocp/builder:golang-1.14 AS builder
+FROM registry.svc.ci.openshift.org/ocp/builder:rhel-8-golang-openshift-4.6 AS builder
 WORKDIR /go/src/github.com/openshift/origin
 COPY . .
 RUN make; \
     mkdir -p /tmp/build; \
     cp /go/src/github.com/openshift/origin/openshift-tests /tmp/build/openshift-tests
 
-FROM registry.svc.ci.openshift.org/ocp/4.2:cli
+FROM registry.svc.ci.openshift.org/ocp/4.6:tools
 COPY --from=builder /tmp/build/openshift-tests /usr/bin/
 RUN yum install --setopt=tsflags=nodocs -y git gzip util-linux && yum clean all && rm -rf /var/cache/yum/* && \
     git config --system user.name test && \