CI server creator pick config value from NOVA_AGENT_CONFIGURATION if available
CI server creator pick config value from NOVA_AGENT_CONFIGURATION if available

joejulian/openstack-guest-agents-unix,joejulian/openstack-guest-agents-unix,rackerlabs/openstack-guest-agents-unix,rackerlabs/openstack-guest-agents-unix,rackerlabs/openstack-guest-agents-unix,joejulian/openstack-guest-agents-unix