Updated openstack/openstack
Project: openstack/nova  24e60ca39186a244aeb053ec7b93845ffe3ab6b3
null
Hide VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES where needed

Running unit test against a newer libvirt fails due to
VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES being always available.

This was mostly hidden as the old unit test globally deleted
the attribute during execution. Removing this side effect
and use mocking of attributes instead where needed.

Related-Bug: LP #1266534

Change-Id: Id0e6d8771f1a43f402b6323f0c0df38ee23e0fa8