Merge pull request #5539 from wonzhq/flush-mode-stat

mon: show # of PGs at high flush mode in the command output

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

diff --cc src/mon/PGMap.cc
Simple merge

diff --cc src/osd/ReplicatedPG.cc
Simple merge

diff --cc src/osd/osd_types.cc
Simple merge

diff --cc src/osd/osd_types.h
Simple merge