modify tox config to use new validation code

this patch modifies tox.ini to perform both the JSON and YAML validation
checks.

Change-Id: Ie8db699f19dc7698407bab1e3d51dcb6184cfad2
Add replication controllers to start and stop scripts

replicaton controllers are now automatically started by the start
scripts and killed by the stop script

Change-Id: I15d15ff9b1b640bd0f8cace872a827ecfe476ca3
Add nova-libvirt to started services

nova-libvirt was not in the list of started services, so its port
was not available prior to this change.

Change-Id: I59cedb68ff87a9a54e93c85e60f748e5cc161a4c
Merge "Add replication controllers to start and stop scripts"
Merge "Add nova-libvirt to started services"