Enabled non-root users to read nfs_shares.conf.
Enabled non-root users to read nfs_shares.conf.

If you use the cinder NFS driver, it will create a file called
nfs_shares.conf, containing a list of NFS shares cinder can
use.  The file is created with 660 permissions and owned by
root:root.  When c-vol starts, it has problems reading
nfs_shares.conf, resulting in a "[Errno 13] Permission denied:
'/etc/cinder/nfs_shares.conf'".  This patch creates
nfs_shares.conf without using sudo, so c-vol can at least
read it.

Change-Id: Ifce2bd4b9ff2191445a1964c1ce09c823d096d68
Closes-Bug: #1297916

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