Prevent interface map from being built for neutron_server container
Prevent interface map from being built for neutron_server container

This patch updates the provider_network library by removing neutron_server
from the list of groups that require provider interface maps, as
neutron_server is not in-path of instance traffic, and all interface mappings
should exist only where network agents are configured. Removing this logic
will allow container_interface to become an optional parameter for provider
network definitions.

Change-Id: I5bfa14e0b7d97eb75756b7e40c93f48ae13fe087

openstack/openstack-ansible-plugins,openstack/openstack-ansible-plugins