Merge PR #22256 into master

* refs/pull/22256/head:
	unittest_addrs: check parse() return value too
	common/LogEntry: remove addrs from log entry operator<<
	common/LogEntry: addr -> addrs
	common/LogEntry: no need for LogEntryKey encode/decode
	msg/msg_types: entity_addrvec_t ctors
	msg/msg_types: add entity_addrvec_t::legacy_addr() helper
	msg/msg_types: some comparators for entity_addrvec_t
	msg/msg_types: entity_addrvec_t parse() and operator<<

Reviewed-by: Kefu Chai <kchai@redhat.com>