import lib/oslo so we can clean it up
import lib/oslo so we can clean it up

we were calling cleanup_oslo, however we weren't importing
lib/oslo, so that was just throwing an error message and moving on.

Let's stop doing that and actually clean up oslo.

Change-Id: I48340a8b3d5b50477fb5a7e2ce0bed27deb3ec01

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