Merge pull request #24065 from jdurgin/wip-luminous-cache-autotune

luminous: os/bluestore: cache autotuning and memory limit

Reviewed-by: Sage Weil <sage@redhat.com>

diff --cc src/common/legacy_config_opts.h
Simple merge

diff --cc src/common/options.cc
Simple merge

diff --cc src/kv/KeyValueDB.h
Simple merge

diff --cc src/os/bluestore/BlueStore.cc
Simple merge