[install] add "nodes" to "Shared File Systems service"
[install] add "nodes" to "Shared File Systems service"

Change-Id: I5b7196e0d3eab88ac990d96e18e58f55e05dddbb

openstack/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals