Use ensure-* roles

The install-* roles in zuul-jobs have been renamed to ensure-*, follow
the rename.

Change-Id: I6e75fe3562c1197e5c7335b8ce3773867e352036

playbooks/quick-start/run.yaml

@@ -3,7 +3,7 @@
     workspace: /tmp/quickstart-test
     local: false
   roles:
-    - name: install-docker
+    - name: ensure-docker
       use_upstream_docker: false
       docker_compose_install: true
     - use-buildset-registry

playbooks/release/pre.yaml

@@ -1,5 +1,5 @@
 - hosts: all
   roles:
-    - install-nodejs
-    - role: install-yarn
+    - ensure-nodejs
+    - role: ensure-yarn
       yarn_lock_file_path: "{{ zuul.project.src_dir }}/web/yarn.lock"