Update section on NVP configuration
Update section on NVP configuration

Document configuration parameters used in the Havana release.
Remove documentation for deprecated parameters which have been
removed in the Havana release.

Change-Id: Ib17e57345cef075af41d8559e804c80ead24750c

saeki-masaki/openstack-manuals,Akasurde/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,gongysh2004/openstack-manual,gongysh2004/openstack-manual,Akasurde/openstack-manuals,saeki-masaki/openstack-manuals,potsmaster/openstack-manuals,kairoaraujo/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,kairoaraujo/openstack-manuals,potsmaster/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals