Disable ceph-ansible NFS gateway by default
Disable ceph-ansible NFS gateway by default

The NFS gateway package installs are enabled by default but since
we do not implement the ansible-ceph-nfs role to configure NFS
gateways these package installs are extraneous.

Change-Id: I32a229c311783d681de2fc544d4fbbd73291fe35

stackforge/os-ansible-deployment,openstack/openstack-ansible,cfarquhar/openstack-ansible,openstack/openstack-ansible,yanyao/openstack-ansible,stackforge/os-ansible-deployment,yanyao/openstack-ansible,bunchc/openstack-ansible,cfarquhar/openstack-ansible,bunchc/openstack-ansible