Merge pull request #60684 from salieri11/wip-igolikov-asok-56442

mds: add MDS asok command for dumping stray directories

diff --cc qa/tasks/cephfs/test_strays.py
Simple merge

diff --cc src/mds/MDCache.cc
Simple merge

diff --cc src/mds/MDCache.h
Simple merge

diff --cc src/mds/MDSDaemon.cc
Simple merge

diff --cc src/mds/MDSRank.cc
Simple merge