Ceph QA

--- done. these PRs were included:
https://github.com/ceph/ceph/pull/54785 - quincy: osd: improve OSD robustness.
https://github.com/ceph/ceph/pull/54904 - quincy: pybind/mgr/pg_autoscaler: Cut back osdmap.get_pools calls
https://github.com/ceph/ceph/pull/55154 - quincy: common/weighted_shuffle: don't feed std::discrete_distribution with all-zero weights
https://github.com/ceph/ceph/pull/55501 - quincy: cmake/modules/BuildRocksDB.cmake: inherit parent's CMAKE_CXX_FLAGS
https://github.com/ceph/ceph/pull/56212 - quincy: librbd: account for discards that truncate in ObjectListSnapsRequest