moving python-neutronclient Make from tools/packaging/third_party to tools/packaging/openstack/centos_64/neutronclient/havana
added python-pbr dependency in neutronclient spec file for havana.
neutronclient new pacakge moved to 3contrail and removed epoch.
new package is already added in cache
depends_packages.cfg modified with 3contrail packages.
manifest files already modified to fetch sources in distro/openstack/ instead of third_party.
All these changes are for centos_64/65 havana

Change-Id: Ica2fa194bae0e379b0a25d19d9815449bcd22c66