python-novaclient is added to nailgun packages specs

This patch is needed for change to fuel-web [1]

[1]: https://review.openstack.org/#/c/135361/

Change-Id: I1a93a998ae7445638467efb7d9dbf14247d2f0c5
Implements: blueprint send-anon-usage
Merge "python-novaclient is added to nailgun packages specs"