ceph-object-corpus: re-update

This was set by 9af94eea209fc2555f66214f01f3edddc35d4209, then single
paxos merge, then accidentally reverted by the next commit
6cb53740f2c356768adfbd3cb55c007d187309d3.

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