Fix wrong `sudo ceph -c` command in lib/ceph
Fix wrong `sudo ceph -c` command in lib/ceph

The `sudo -c ${CEPH_CONF_FILE} ceph ...` in lib/ceph misplaced
`ceph`. The correct syntax is `sudo ceph -c ${CEPH_CONF_FILE} ...`,
see lib/ceph:308.

While installing ./stack.sh with ceph enabled, the above malformed
command raises a `usage: sudo -h | -K | -k | -V ...` error and stops
the installation.

This patch fixes `sudo -c ${CEPH_CONF_FILE} ceph ...` by moving
`ceph` to the right place.

Change-Id: I3da943d5a353d99b09787f804b79c1d006a09d96
Closes-bug: #1453055

rushiagr/devstack,bswartz/devstack,upadhyay-prashant/devstack,liuquansheng47/devstack,dirkmueller/devstack,pczerkas/devstack,pczerkas/devstack,ozamiatin/devstack,prithivm/branch01,pombredanne/devstack,LoHChina/devstack,varunarya10/devstack,TwinkleChawla/devstack,thomasem/devstack,nawawi/openstack,avvocatodemarchis/devstack,noironetworks/devstack,dtroyer/devstack,upadhyay-prashant/devstack,vsham20/devstack,nawawi/openstack,olivierlemasle/devstack,bigswitch/devstack,thomasem/devstack,richliu/devstack,olivierlemasle/devstack,richliu/devstack,herrsechs/devstack,dtroyer/devstack,varunarya10/devstack,bq-xiao/devstack,andrewrothstein/devstack,bljgaurav/openstack-test,bljgaurav/openstack-test,bq-xiao/devstack,liuquansheng47/devstack,parul24/devstack,HPCHub/devstack,TwinkleChawla/devstack,avvocatodemarchis/devstack,wenhuizhang/devstack,j4/devstack,openstack-dev/devstack,dirkmueller/devstack,mmasaki/devstack,parul24/devstack,vsham20/devstack,bswartz/devstack,eharney/devstack,herrsechs/devstack,group-policy/devstack,rushiagr/devstack,costingalan/devstack,eharney/devstack,pacinete/devstack,group-policy/devstack,wenhuizhang/devstack,atulpatil301/devstack,pombredanne/devstack,mc2014/devstack,pacinete/devstack,bigswitch/devstack,j4/devstack,prithivm/branch01,Mahito/devstack,flavio-fernandes/devstack,mssumanth/devstack,ozamiatin/devstack,atulpatil301/devstack,CloudServer/devstack,mc2014/devstack,HPCHub/devstack,mssumanth/devstack,noironetworks/devstack,samgoon/devstack,LoHChina/devstack,NaokiMiyata/devstack,flavio-fernandes/devstack,vishnugonela/devstack,mmasaki/devstack,andrewrothstein/devstack,Mahito/devstack,samgoon/devstack,openstack-dev/devstack,CloudServer/devstack,NaokiMiyata/devstack,costingalan/devstack,vishnugonela/devstack