Merge pull request #18483 from Songweibin/wip-list-children2

 rbd: fix rbd children listing when child is in trash

Reviewed-by: Jason Dillaman <dillaman@redhat.com>

diff --cc src/include/rbd/librbd.h
Simple merge

diff --cc src/include/rbd/librbd.hpp
Simple merge

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

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

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

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