Package install support for python-ironicclient

Change-Id: I0cd5fb0fd332d54d8ef522ca1a6d6e0d5c645325
Merge "Package install support for python-ironicclient"
os-svc-enable should error when no svcname given.

The usage call when checking for SERVICENAME did not exit. Ooops.

Change-Id: Ie0cbc0f8abf8801f71f2b846af11e73dfed9af8e
Fix os-svc-restart to exit correctly without -n.

Similar to os-svc-enable, it was trying to run when invoked
incorrectly.

Change-Id: Ice285d3796149f0c82521da7c5112375cf15c1fe