Merge pull request #43331 from adk3798/agent-drain

mgr/cephadm: fix host drain with agent

Reviewed-by: Nizamudeen A <nia@redhat.com>

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