chown -R to ensure that stack user owns data_dir
chown -R to ensure that stack user owns data_dir

The fix for bug #1129748 tightens some permissions on image
directories.  This breaks the devstack gate jobs, which were
relying on wide-open permissions.  chowning recursively should
ensure that all the directories are owned by the stack user,
so the gate tests work with tighter permissions.

Change-Id: I09be54bff6d8f9c3f7f599d6e5ada6431beb7c31

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