Merge pull request #43691 from curtbruns/use_optimal_for_min_alloc

os/bluestore: Set min_alloc_size to optimal io size

Reviewed-by: Sage Weil <sage@redhat.com>
Reviewed-by: Igor Fedotov <ifedotov@suse.com>
Reviewed-by: Adam Kupczyk <akupczyk@redhat.com>

diff --cc src/common/options/global.yaml.in
Simple merge

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

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