Updating ose-sdn images to be consistent with ART

Reconciling with https://github.com/openshift/ocp-build-data/tree/da6a5af1fa96762cc8410f09fc28c0457280f59a/images/ose-sdn.yml

Author: AOS Automation Release Team

.ci-operator.yaml

@@ -1,4 +1,4 @@
 build_root_image:
   name: release
   namespace: openshift
-  tag: rhel-8-release-golang-1.20-openshift-4.14
+  tag: rhel-8-release-golang-1.20-openshift-4.15

images/sdn/Dockerfile.rhel

@@ -1,17 +1,17 @@
-FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.20-openshift-4.14 AS rhel9-builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.20-openshift-4.15 AS rhel9-builder
 WORKDIR /go/src/github.com/openshift/sdn
 COPY . .
 RUN make build --warn-undefined-variables
 RUN CGO_ENABLED=1 make build GO_BUILD_PACKAGES="github.com/openshift/sdn/cmd/openshift-sdn-cni" --warn-undefined-variables
 
-FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.20-openshift-4.14 AS rhel8-builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.20-openshift-4.15 AS rhel8-builder
 WORKDIR /go/src/github.com/openshift/sdn
 COPY . .
 RUN make build --warn-undefined-variables
 RUN CGO_ENABLED=1 make build GO_BUILD_PACKAGES="github.com/openshift/sdn/cmd/openshift-sdn-cni" --warn-undefined-variables
 
-FROM registry.ci.openshift.org/ocp/4.14:cli AS cli
-FROM registry.ci.openshift.org/ocp/4.14:base
+FROM registry.ci.openshift.org/ocp/4.15:cli AS cli
+FROM registry.ci.openshift.org/ocp/4.15:base
 
 ARG ovsver=2.13