CI - Dummy overcloud-vips-deployed.yaml file

Add a dummy overcloud-vips-deployed.yaml file so
that we can land https://review.opendev.org/779828
before https://review.opendev.org/774903 where there
is a circular dependency.

Change-Id: If10a80ca47e21214f9b9c35d529976eba9958d8a
Related: blueprint network-data-v2-ports

roles/overcloud-deploy/templates/overcloud-deploy.sh.j2

@@ -37,6 +37,11 @@ if [ $? -ne 0 ]; then
 fi
 {% endif %}
 
+{% if network_provision|bool %}
+# NOTE(hjensas): A dummy file, will be replaced in the follow on change
+echo "{}" > {{ working_dir }}/overcloud-vips-deployed.yaml
+{% endif %}
+
 {% if baremetal_provision|bool %}
 ## * Provision the baremetal nodes
 ## ::