This patch updates the Active/Standby bluprint to:
1. fix asciiflow rendering problem.
2. update the datamodel impact section to include actual changes in
current review 206252.
3. update the api impact section to include the amphorae rest api
changes.
4. discuss further performance impact that must be taken care of when
developing services health checks for VRRP.
Change-Id: I6bddfc628ebf615f5c2966f2ef1837899cd122bf