Merge pull request #38000 from dillaman/wip-librbd-migration-3

librbd: http-based migration source

Reviewed-by: Kefu Chai <kchai@redhat.com>
Reviewed-by: Mykola Golub <mgolub@suse.com>

diff --cc src/CMakeLists.txt
Simple merge

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

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

diff --cc src/test/librbd/io/test_mock_CopyupRequest.cc
Simple merge