add pre-staging of fedora docker images for osbs builds

Signed-off-by: Adam Miller <admiller@redhat.com>

inventory/group_vars/all

@@ -165,3 +165,7 @@ csi_relationship: |
 # docker images required by OpenShift Origin
 openshift_required_images:
   - "openshift/origin-pod"
+
+# docker images required by OSBS for builds
+fedora_required_images:
+  - "fedora:24"

playbooks/groups/osbs-master.yml

@@ -225,6 +225,21 @@
 
   tasks:
 
+    - name: pull fedora required docker images
+      shell: "docker pull {{item}}"
+      with_items: "{{fedora_required_images}}"
+      delegate_to: compose-x86-01.phx2.fedoraproject.org
+
+    - name: tag fedora required docker images for our registry
+      shell: "docker tag {{item}} {{docker_registry}}/{{item}}"
+      with_items: "{{fedora_required_images}}"
+      delegate_to: compose-x86-01.phx2.fedoraproject.org
+
+    - name: push fedora required docker images to our registry
+      shell: "docker push {{docker_registry}}/{{item}}"
+      with_items: "{{openshift_required_images}}"
+      delegate_to: compose-x86-01.phx2.fedoraproject.org
+
     - name: register origin_version_out rpm query
       shell: "rpm -q origin --qf '%{Version}'"
       register: origin_version_out