Fix race condition between docker-puppet and container steps

GenerateConfigDeployment wasn't anchored with dependencies anywhere. If
it took too long to complete and step 1 of containers creation already
started executing, problems happened. This is now fixed by adding the
required dependency relationship.

Change-Id: Ie7dfd2a965e704ba278d4c2fad67f14a3a62799e
Closes-Bug: #1692503

docker/docker-steps.j2

@@ -277,6 +277,7 @@ resources:
         {%- endfor %}
       - {{role.name}}PreConfig
       - {{role.name}}HostPrepDeployment
+      - {{role.name}}GenerateConfigDeployment
   {% else %}
     depends_on:
         {% for dep in roles %}