Merge PR #26568 into master

* refs/pull/26568/head:
	unittest_auth: add unit tests for AuthRegistry con_mode selection
	auth/AuthRegistry: register as an observer
	auth/AuthRegistry: clear output vectors
	common/options: add ms_mon_client_mode
	auth: push con_mode selection into AuthRegistry helper

Reviewed-by: Ricardo Dias <rdias@suse.com>

diff --cc src/msg/async/ProtocolV2.cc
Simple merge

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