mgr: rate-limit repetitive CherryPy access logs

mgr: rate-limit repetitive CherryPy access logs
  Prometheus scrapes /metrics every few seconds, and service-discovery
  endpoints (ceph, node-exporter, alertmanager, ceph-exporter) every
  minute, causing CherryPy's access logger to emit thousands of routine
  INFO-level entries per day. Add CherryPyAccessFilter to rate-limit
  HTTP 200 responses to one log entry per endpoint every 300 seconds
  (configurable). Non-200 responses continue to be logged unconditionally.
  Set cherrypy.log.access_log.propagate to True so access log records
  also propagate into the mgr logging path.

Fixes: https://tracker.ceph.com/issues/77814
Signed-off-by: Manya Dogra <manya.dogra2004@gmail.com>