Neutron/NVP plugin: fix 'ip link' usage
Neutron/NVP plugin: fix 'ip link' usage

Closes-bug: #1258141

Change-Id: Id26eca6c3174a108d1822440956ab7f66cc3ebd3

promptworks/devstack,NaokiMiyata/devstack,avvocatodemarchis/devstack,sc68cal/devstack,mssumanth/devstack,Mahito/devstack,upadhyay-prashant/devstack,j4/devstack,mmasaki/devstack,pacinete/devstack,avvocatodemarchis/devstack,LoHChina/devstack,BSJAIN92/OpenStack,kplus/devstack-moonshot,thomasem/devstack,virtualopensystems/devstack,nuxeh/devstack,affo/devstack,prithivm/branch01,promptworks/devstack,openstack-dev/devstack,group-policy/devstack,flavio-fernandes/devstack,eharney/devstack,affo/devstack,innodee/openstackk,tianweizhang/devstack,pombredanne/devstack,openstack-dev/devstack,neerja28/Devstack_GlusterFS,NaokiMiyata/devstack,Millnert/contrail-devstack,srics/devstack,richliu/devstack,dirkmueller/devstack,parul24/devstack,TwinkleChawla/devstack,LoHChina/devstack,olivierlemasle/devstack,sc68cal/devstack,dtroyer/devstack,nawawi/openstack,JioCloud/devstack,ozamiatin/devstack,dirkmueller/devstack,vishnugonela/devstack,noironetworks/devstack,bigswitch/devstack,yamt/devstack,olivierlemasle/devstack,prithivm/branch01,tianweizhang/devstack,liuquansheng47/devstack,herrsechs/devstack,wenhuizhang/devstack,pacinete/devstack,mc2014/devstack,costingalan/devstack,pombredanne/devstack,atulpatil301/devstack,nawawi/openstack,pczerkas/devstack,HPCHub/devstack,bq-xiao/devstack,upadhyay-prashant/devstack,noironetworks/devstack,BSJAIN92/OpenStack,parul24/devstack,vsham20/devstack,williamthegrey/devstack,herrsechs/devstack,mssumanth/devstack,bq-xiao/devstack,bswartz/devstack,atulpatil301/devstack,thomasem/devstack,flavio-fernandes/devstack,wenhuizhang/devstack,eharney/devstack,neerja28/Devstack_GlusterFS,nuxeh/devstack,andrewrothstein/devstack,pczerkas/devstack,rushiagr/devstack,costingalan/devstack,varunarya10/devstack,eshnil2000/devstack,andrewrothstein/devstack,HPCHub/devstack,mc2014/devstack,bigswitch/devstack,liuquansheng47/devstack,j4/devstack,sequenceiq/devstack,CloudServer/devstack,dtroyer/devstack,ozamiatin/devstack,bljgaurav/openstack-test,mmasaki/devstack,bswartz/devstack,vsham20/devstack,bljgaurav/openstack-test,Juniper/devstack,CloudServer/devstack,samgoon/devstack,sequenceiq/devstack,rushiagr/devstack,Mahito/devstack,jamielennox/devstack,vishnugonela/devstack,samgoon/devstack,TwinkleChawla/devstack,varunarya10/devstack,group-policy/devstack,kplus/devstack-moonshot,richliu/devstack