Fixes a typo in nova-cert

It should be status instead of statusi passed to the supports attribute.
For now it doesn't cause any errors but that really depends on how chef
behaves.

Change-Id: I287ee2ce9daa80ca2f17e68b50cf44eefea81c98
Allow live migration attributes

Change-Id: I435200916b006af9146b8b2790fd167ad4d50fee
Closes-Bug: #1286582
Allow flat_injected and use_ipv6 overrides

These are useful when trying to use config_drive

Change-Id: Ib7a554327a68c5a967c021835156d92d33c3b7fd
Closes-Bug: #1329035
use new python_packages attributes from -common

*_python_packages attributes are being moved to -common in order to
remove the duplication from all the cookbooks which are using them

Change-Id: I952372ec06cc6560b9a942bfc100d12622152ab2
Implements: blueprint move-python-db-client-attrs-to-common