In the nova library, some calls to ``configure_keystoneauth`` are called
using a non existing local variable $conf. This should be the $NOVA_CONF
variable instead.
Closes-Bug: #2143929
Signed-off-by: Rodolfo Alonso Hernandez <ralonsoh@redhat.com>
Change-Id: I7844237d511154f917f236b8f122bc2bf514991d