Mark 'undercloud deploy' as experimental
Mark 'undercloud deploy' as experimental

This patch marks the 'undercloud deploy' feature as experimental
for Pike. There is not yet agreement on when this will (if ever)
replace instack-undercloud. Until then I think marking it as
experimental is wise to avoid confusion should we release Pike
without converting 'undercloud install' to make use of this.

Change-Id: Id6f1343994429db2feb8250332dd9e1c62b73fde

openstack/python-tripleoclient