Fixed KeyErrors in case VlanManager is not used
Fixed KeyErrors in case VlanManager is not used

Change-Id: I3d869b6c476ffa0ec1c0e7a6c8c210d49bc3b528

larsks/packstack,fr34k8/packstack,openstack/packstack,stackforge/packstack,harveyzh/packstack,larsks/packstack,imcsk8/packstack,bcrochet/packstack,harveyzh/packstack,radez/packstack,xbezdick/packstack,mahak/packstack,larsks/packstack,imcsk8/packstack,xbezdick/packstack,radez/packstack,imcsk8/packstack,openstack/packstack,pkilambi/packstack,radez/packstack,bcrochet/packstack,harveyzh/packstack,fr34k8/packstack,spkane/packstack,xbezdick/packstack,spkane/packstack,mahak/packstack,palmer159/openstack-test,bcrochet/packstack,spkane/packstack,stackforge/packstack,mahak/packstack,pkilambi/packstack,palmer159/openstack-test,openstack/packstack,palmer159/openstack-test,stackforge/packstack,fr34k8/packstack,pkilambi/packstack