We improve logging in critical functions in hinted handoff
to capture more information about the behavior of the module.
That should help us in debugging sessions.
The logs should only be printed during more important events
and so they should not clog the log files.
Backport: not necessary.
Closesscylladb/scylladb#25031
* github.com:scylladb/scylladb:
db/hints/manager.cc: Add logs for changing host filter
db/hints: Increase log level in critical functions
44de563d38