Merge pull request #5484 from cxwshawn/de-fix

ceph-dencoder: add RGWRegion, RGWZoneParams, RGWOLHInfo support.

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

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

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

diff --cc src/test/encoding/types.h
Simple merge