Merge PR #40183 into master

* refs/pull/40183/head:
	client: remove useless mds member in Fh class
	client: adjust the Fh class members order
	client: switch to use shared_ptr for mds_sessions
	client: minor cleanup to Fh related code
	client: minor cleanup to MetaRequest class
	client: minor cleanup to Client related code

Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>

diff --cc src/client/Client.cc
Simple merge