osd: ignore logs i don't expect without freaking out
osd: ignore logs i don't expect without freaking out

We may get a log we didn't think we requested if the prior_set gets rebuilt
or our peering is restarted for some other reason.  Just ignore it, instead
of asserting.

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph