1. Fix the centos openstack status, as the openstack services are managed by supervisor.
2. Adding vrouter-agent.conf.sh to generate contrail-vrouter-agent.conf from old config files, during upgrade.
3. Change the permission of collector.conf.sh, make it executale.

Change-Id: I24e51ff0ceffb18cac641dbc3c7e57c6c676e0cb