ceph: make /var/run/ceph writeable by non-root too
ceph: make /var/run/ceph writeable by non-root too

Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@inktank.com>

t-miyamae/teuthology,ceph/teuthology,robbat2/teuthology,SUSE/teuthology,yghannam/teuthology,dreamhost/teuthology,SUSE/teuthology,ktdreyer/teuthology,ivotron/teuthology,robbat2/teuthology,dmick/teuthology,michaelsevilla/teuthology,dmick/teuthology,caibo2014/teuthology,zhouyuan/teuthology,caibo2014/teuthology,zhouyuan/teuthology,dmick/teuthology,michaelsevilla/teuthology,yghannam/teuthology,ktdreyer/teuthology,SUSE/teuthology,ivotron/teuthology,t-miyamae/teuthology,tchaikov/teuthology,tchaikov/teuthology,dreamhost/teuthology,ceph/teuthology