Merge pull request #18495 from ceph/wip-da-SCA-20171013

osd,rgw,librbd: SCA fixes

Reviewed-by: Kefu Chai <kchai@redhat.com>

diff --cc src/kv/MemDB.h
Simple merge

diff --cc src/librbd/librbd.cc
Simple merge

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

diff --cc src/msg/async/AsyncConnection.cc
Simple merge

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

diff --cc src/rgw/rgw_rados.cc
Simple merge

diff --cc src/test/librbd/test_librbd.cc
Simple merge