* refs/pull/19369/head:
qa: update handling of fs status format
PendingReleaseNotes: add note for format change
mds/MDSMap : use arrary_section for mds stat
Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>
Reviewed-by: Zheng Yan <zyan@redhat.com>
Reviewed-by: Xiaoxi Chen <xiaoxchen@ebay.com>