openshift/os: rebase OKD node images on c10s

Author: jcapiitao

ci-operator/config/openshift/os/openshift-os-master__okd-scos.yaml

@@ -3,6 +3,11 @@ base_images:
     name: builder
     namespace: ocp
     tag: stream9
+  stream-coreos-base:
+    cluster: https://quay.io
+    name: ocp-v4.0-art-dev
+    namespace: openshift-release-dev
+    tag: c10s-coreos
 build_root:
   image_stream_tag:
     name: coreos-assembler
@@ -13,6 +18,10 @@ images:
   - name: OPENSHIFT_CI
     value: "1"
   dockerfile_path: Containerfile
+  inputs:
+    stream-coreos-base:
+      as:
+      - quay.io/openshift-release-dev/ocp-v4.0-art-dev:c9s-coreos
   to: stream-coreos
 - build_args:
   - name: OPENSHIFT_CI