Merge pull request #42051 from melissa-kun-li/asyncssh

mgr/cephadm: replace execnet and remoto with asyncssh

Reviewed-by: Adam King <adking@redhat.com>
Reviewed-by: Dimitri Savineau <dsavinea@redhat.com>
Reviewed-by: Kefu Chai <kchai@redhat.com>

diff --cc ceph.spec.in
Simple merge

diff --cc src/cephadm/cephadm
Simple merge

diff --cc src/pybind/mgr/cephadm/module.py
Simple merge

diff --cc src/pybind/mgr/cephadm/serve.py
Simple merge

diff --cc src/pybind/mgr/cephadm/tests/test_cephadm.py
Simple merge