Remove deprecated NVP options

In Havana, NVP configuration was simplified;
in the process a few options that existed
in Grizzly or older were deprecated. This
change removes those options from the Icehouse
tree.

Fixes bug #1221840

Change-Id: Id83a339c88ec2477718a350b6ac1678ccba01509
Fix downgrade in migration

In 477a4488d3f4_ml2_vxlan_type_driver name of table ml2_vxlan_endpoints to drop
was not correct.

Change-Id: I758c42251b2d5bcc921c50394a1313a1ed4ae106
Merge "Fix downgrade in migration"
Merge "Remove deprecated NVP options"