test: disable nfs for containers

Based on https://github.com/ceph/ceph-container/pull/1269 and given
there are no stable packages and reliable repository, we disable nfs
ganesha temporarly.

Signed-off-by: Sébastien Han <seb@redhat.com>
(cherry picked from commit 6c3ef90ebe)

tests/functional/centos/7/docker-collocation/hosts

@@ -22,6 +22,6 @@ osd0
 rgw0
 mds0
 
-[nfss]
-rgw0
-mds0
+#[nfss]
+#rgw0
+#mds0

tests/functional/centos/7/docker/hosts

@@ -16,8 +16,8 @@ mds0
 [rgws]
 rgw0
 
-[nfss]
-nfs0
+#[nfss]
+#nfs0
 
 [clients]
 client0

tests/functional/centos/7/docker/vagrant_variables.yml

@@ -8,7 +8,7 @@ mon_vms: 3
 osd_vms: 2
 mds_vms: 1
 rgw_vms: 1
-nfs_vms: 1
+nfs_vms: 0
 rbd_mirror_vms: 1
 client_vms: 2
 iscsi_gw_vms: 1

tests/functional/ubuntu/16.04/cluster/hosts

@@ -18,5 +18,5 @@ rgw0
 [clients]
 client0
 
-[nfss]
-nfs0
+#[nfss]
+#nfs0

tests/functional/ubuntu/16.04/cluster/vagrant_variables.yml

@@ -8,7 +8,7 @@ mon_vms: 3
 osd_vms: 1
 mds_vms: 1
 rgw_vms: 1
-nfs_vms: 1
+nfs_vms: 0
 rbd_mirror_vms: 0
 client_vms: 1
 iscsi_gw_vms: 0