Comment 2 for bug 1773910

Sample:
2018-06-05 10:53:21 DEBUG juju-log Processing request 18ecae9a-68a0-11e8-83b7-00163e1f050e
2018-06-05 10:53:27 DEBUG juju-log Processing request 56290312-68a0-11e8-9d9d-7cfe90aac490
2018-06-05 10:53:31 DEBUG juju-log Processing request 56c638da-68a0-11e8-ab14-7cfe90a82500

root@juju-958f87-1-lxd-9:~# awk '/Processing request/ {print $7}' /var/log/juju/unit-ceph-mon-3.log | tail -100 | sort | uniq -c | sort -n
      6 4bdd1fce-68a0-11e8-8c25-7cfe90aedfd0
      6 5113e6c6-68a0-11e8-9528-7cfe90aedc50
      6 53087b36-68a0-11e8-9a86-7cfe90aedf30
      7 01100c44-68a1-11e8-9488-90e2bafb4d2c
      7 4e1ae12c-68a0-11e8-a678-7cfe90aedc10
      7 581b1e12-68a0-11e8-a81d-7cfe90bb0990
      7 e6ffd3ee-689f-11e8-8fe2-00163e206594
      7 e865437c-689f-11e8-bebf-00163e5e6455
      7 eb92c45c-689f-11e8-a92f-00163e449e77
      8 17afef42-68a0-11e8-81a5-00163e0956f5
      8 18ecae9a-68a0-11e8-83b7-00163e1f050e
      8 1a94f270-68a0-11e8-8281-00163e12c00d
      8 56290312-68a0-11e8-9d9d-7cfe90aac490
      8 56c638da-68a0-11e8-ab14-7cfe90a82500