Updating mellanox_openstack manifests for Fuel 6.0

* removed openibd workaround for upstart bug,
  this was fixed in the OFED drivers.

* removed mlnxvif package which is no longer used
  and previous vif_driver configurations.

Related-bug: #1386865
Closes-bug:  #1391797
Closes-bug:  #1353886

Change-Id: I9c670b8392f8b3ef93f1e6bf9f6514bf2bce6c2b
Signed-off-by: gilmeir <gilmeir@mellanox.com>
Merge "Updating mellanox_openstack manifests for Fuel 6.0"