cli: set min-op-version and max-op-version for getspec

Change-Id: I2185df5d6b560d9367ae404c91812048e1655180
BUG: 969193
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/5119
Reviewed-by: Kaushal M <kaushal@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-on: http://review.gluster.org/5307