Nagios plugins for Ceph
-----------------------
Version 1.5.6:
* `check_ceph_rgw`, `check_ceph_rgw_api`: handled possible situations when
   bucket exists, but is empty (rgw bugs).

Version 1.5.5:
* `check_ceph_mgr` plugin added.

Version 1.5.4:
* `check_ceph_rgw_api` 'insecure' option added.

Version 1.5.3:
* `check_ceph_rgw_api` plugin added.

Version 1.5.0:
* `check_ceph_df` plugin added.

Version 1.4.0:
* Refactored `check_ceph_mon plugin` (v1.1.0), parses ceph quorum_status output.

Version 1.3.1:
* `check_ceph_rgw` with detailed bucket stats as perf data (--detail).

Version 1.3.0:
* `check_ceph_rgw` with bucket stats as perf data.

Version 1.2.0:
* `check_ceph_rgw` plugin added.

Version 1.1.0:
* `check_ceph_mon` plugin added.
* `check_ceph_osd` plugin added.

Version 1.0.1:
* HEALTH_OK doesn't always have additional information.

Version 1.0:
* Initial 'ceph health' nagios plugin.
