Merge pull request #38263 from tchaikov/wip-boost-1.74-asio

src,cmake: define BOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT for Boost.Asio users and cleanups

Reviewed-by: Casey Bodley <cbodley@redhat.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Reviewed-by: Adam C. Emerson <aemerson@redhat.com>

diff --cc CMakeLists.txt
Simple merge

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