Make the Nova barclamp function when deploying Grizzly.

The nova smoketest is now able to spin up a VM, but we are not testing
network connectivity yet.
Merge pull request #133 from VictorLowther/pull-req-release-pebbles-master-a0c8ce902ba2ff2b08a2b4fcf2938992f2e17f34

https://github.com/crowbar/barclamp-nova/pull/133

Merged by devtool for VictorLowther