replaced vm_project_uuid by the use of vm_project_id

Port of ./agent/openstack/instance_service.thrift does not respect
vm_project_uuid, but contrail-vrouter-agent needs vm_project_id to be
set. Otherwise the network will not be set up correctly.

Change-Id: I5e591804d5612556fd523cc2674762f0348ac936
Merge "replaced vm_project_uuid by the use of vm_project_id"