Merge pull request #69455 from sunyuechi/wip-crimson-messenger-thrash-mem

crimson/test: shrink messenger-thrash max_message_len to 1MB

Reviewed-by: Matan Breizman <mbreizma@redhat.com>
Reviewed-by: Kefu Chai <k.chai@proxmox.com>

diff --cc src/test/crimson/test_messenger_thrash.cc
Simple merge