Add API test for port dns_domain

This patchset adds a Tempest API test for the port dns_domain attribute.

It also enables the dns-domain-ports extension for testing, which is a
super-set of the dns extension.

Change-Id: I5c1da61a8a49c190aad549713da646a3abb8ccb1
1 file changed
tree: 602900c55fceb39b5660d96b92dbadff5d92a977
  1. neutron/