ci/prow: add stubs for rhel 9.6 and c10s

Preparation work to update openshift/release jobs to build rhel 9.6
and c10s.
Needs to be merged before openshift#1629
and openshift#1498

ci/prow-entrypoint.sh

@@ -326,6 +326,12 @@ main() {
             cosa_build
             kola_test_metal
             ;;
+        "rhcos-96-build-test-qemu")
+            exit 0
+            ;;
+        "rhcos-96-build-test-metal")
+            exit 0
+            ;;
         "scos-9-build-test-qemu")
             setup_user
             cosa_init "okd-c9s"
@@ -338,6 +344,12 @@ main() {
             cosa_build
             kola_test_metal
             ;;
+        "scos-10-build-test-qemu")
+            exit 0
+            ;;
+        "scos-10-build-test-metal")
+            exit 0
+            ;;
         *)
             # This case ensures that we exhaustively list the tests that should
             # pass for a PR. To add a new test in openshift/os: