Drop nametype_index for nova_dns when updating to v1.1.3

See nova-dns change I3f7f4736ceb6cdb0a7a0241e99db45f3c57da7d8.

Change-Id: If1987e6a21b3f7ec614b4280f0da742dceb2220e
nova.conf: Set dns_zone_address to master-ip-public

This is new option added to nova-dns recently.

Issue: altai-94
Change-Id: I02aac096b2ab5e0a8c1d06beebb85f1e38b8fc39