Moving supervisor-vrouter files to contrail-vrouter-init, as some customers dont use contrail-openstack-vrouter, isntead they use subset of it.

Change-Id: I914f5f17aad38ce8a397a486cef456dd7ca7dfd3
Merge "Moving supervisor-vrouter files to contrail-vrouter-init, as some customers dont use contrail-openstack-vrouter, isntead they use subset of it."