from nova import exception as excp
from nova import flags
-from nova import log as logging
from nova.openstack.common import cfg
+from nova.openstack.common import log as logging
from nova.scheduler import chance
from quantumclient import Client
from nova import exception as excp
from nova import flags
-from nova import log as logging
from nova.openstack.common import cfg
+from nova.openstack.common import log as logging
from nova.virt.vif import VIFDriver
from quantumclient import Client
from ryu.app.client import OFPClient
from nova import flags
-from nova import log as logging
from nova.network import linux_net
from nova.openstack.common import cfg
+from nova.openstack.common import log as logging
from nova import utils
from ryu.app.client import OFPClient
from nova import flags
-from nova import log as logging
from nova.openstack.common import cfg
+from nova.openstack.common import log as logging
from nova import utils
from nova.virt.libvirt import vif as libvirt_vif