Correct bugs during bootstrap

1. Ensure Zookeeper restarts and checks out successfully before
proceeding with other steps.
2. Make sure PVC itself doesn't start prematurely.

roles/pvc/tasks/zookeeper/main.yml

@@ -42,4 +42,7 @@
   with_items:
     - zookeeper
 
+- include: zookeeper/bootstrap.yml
+  when: bootstrap is defined and bootstrap
+
 - meta: flush_handlers