Merge pull request #30538 from tchaikov/wip/test/ceph_argparse/yet-another-test

mon.test: improve validation and add a test for "osd pool create"

Reviewed-by: xie xingguo <xie.xingguo@zte.com.cn>

diff --cc src/mon/MonCommands.h
Simple merge

diff --cc src/test/pybind/test_ceph_argparse.py
Simple merge