ceph: fix valgrind error check
ceph: fix valgrind error check

grep all the logs, not the dir... doh!

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