Updating ose-cluster-csi-snapshot-controller-operator builder & base …

…images to be consistent with ART

Reconciling with https://github.com/openshift/ocp-build-data/tree/4a98c8d67fb1b0233d689c4bcc7f97e61da53999/images/ose-cluster-csi-snapshot-controller-operator.yml

Dockerfile.rhel7

@@ -1,10 +1,10 @@
-FROM registry.svc.ci.openshift.org/ocp/builder:rhel-8-golang-1.15-openshift-4.6 AS builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.15-openshift-4.6 AS builder
 WORKDIR /go/src/github.com/openshift/cluster-csi-snapshot-controller-operator
 COPY . .
 ENV GO_PACKAGE github.com/openshift/cluster-csi-snapshot-controller-operator
 RUN go build -ldflags "-X $GO_PACKAGE/pkg/version.versionFromGit=$(git describe --long --tags --abbrev=7 --match 'v[0-9]*')" -tags="ocp" -o csi-snapshot-controller-operator ./cmd/csi-snapshot-controller-operator
 
-FROM registry.svc.ci.openshift.org/ocp/4.6:base
+FROM registry.ci.openshift.org/ocp/4.6:base
 COPY --from=builder /go/src/github.com/openshift/cluster-csi-snapshot-controller-operator/csi-snapshot-controller-operator /usr/bin/
 COPY manifests /manifests
 COPY vendor/github.com/openshift/api/operator/v1/0000_80_csi_snapshot_controller_operator_01_crd.yaml manifests/01_config.crd.yaml