Merge pull request #13591 from batrick/mds-static-counters

mds: automate MDS object count tracking

Reviewed-by: John Spray <john.spray@redhat.com>

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

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

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

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