UPSTREAM: <carry>: Updating ose-powervs-cloud-controller-manager-cont…

…ainer image to be consistent with ART

Reconciling with https://github.com/openshift/ocp-build-data/tree/9dc2a375bf335e7e4e3d7e75abc5c3bdbb0c0e98/images/ose-powervs-cloud-controller-manager.yml

.ci-operator.yaml

@@ -1,4 +1,4 @@
 build_root_image:
   name: release
   namespace: openshift
-  tag: rhel-8-release-golang-1.20-openshift-4.15
+  tag: rhel-9-release-golang-1.20-openshift-4.15

openshift-hack/images/Dockerfile.openshift

@@ -1,11 +1,11 @@
 # Build IBM cloud controller manager binary
-FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.20-openshift-4.15 AS ccm-builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.20-openshift-4.15 AS ccm-builder
 WORKDIR /build
 COPY . .
 RUN CGO_ENABLED=0 go build -ldflags "-s -w" -o ibm-cloud-controller-manager .
 
 # Assemble the final image
-FROM registry.ci.openshift.org/ocp/4.15:base
+FROM registry.ci.openshift.org/ocp/4.15:base-rhel9
 LABEL description="IBM Cloud Controller Manager"
 COPY --from=ccm-builder /build/ibm-cloud-controller-manager /bin/ibm-cloud-controller-manager
 ENTRYPOINT [ "/bin/ibm-cloud-controller-manager" ]