ceph.conf: enable old message assert
ceph.conf: enable old message assert

If this triggers, the RECONNECT_SEQ feature is broken (and
maybe we've caught #5517).

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