Add a basic test to skip the test if we are running against a older LXC
Add a basic test to skip the test if we are running against a older LXC

Signed-off-by: Dougal Matthews <8f24f2c0fd825cfb6716a36822888c4a01678c88@dougalmatthews.com>

lxc/pylxd,lxc/pylxd