rgw/lc: decorating log events with more details

rgw/lc: decorating log events with more details

  * some minor typos in the log event strings
  * correcting the names of the owning functions in some of the log events
  * adding worker index to the events in LCWorker::entry()
  * adding worker index to the cycle-finished events
  * adding bucket name to the interval budget expired events
  * adding bucket name to the events found in RGWLC::bucket_lc_process()
  * adding event to capture the end and the return code for the call to
    bucket_lc_process()

Signed-off-by: Oguzhan Ozmen <oozmen@bloomberg.net>
(cherry picked from commit 9d6b463a6442ed5ea3ada5f0926214173f4b7576)