fixing the openstack package version and adding exact version as dependency in contrail-openstack-config and contrail-openstack packages.
Moving contrail-fabric-utils to common/rpm from third_party
Removing epoc string from horixon and contrail-horizon plugin packages

Change-Id: I85e1aedc439488af16587218b24ffb4408cc40c4
Closes-Bug-Master: 1360700
Merge "fixing the openstack package version and adding exact version as dependency in contrail-openstack-config and contrail-openstack packages. Moving contrail-fabric-utils to common/rpm from third_party Removing epoc string from horixon and contrail-horizon plugin packages"