Merge pull request #9291 from trociny/wip-15715

rbd-nbd does not properly handle resize notifications

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/ImageWatcher.cc
Simple merge

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

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