Add switch and nufa options to 'gluster cli'

Change-Id: Ic3c43291e0e1ead0d89c0436e8d70aa5dee2f543
BUG: 924488
Signed-off-by: Harshavardhana <harsha@harshavardhana.net>
Reviewed-on: http://review.gluster.org/5391
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>