added probes for checking osds and mons, added config.

new probes added for:
- check_ceph_mon: checks if a mon is available, using ceph mon dump
  and parsing the output
- check_ceph_osd: checks if a osd is available, using ceph osd dump
  and parsing the output
updated authors.
Merge branch 'master' of https://github.com/rochaporto/ceph-nagios-plugins into rochaporto-master

Conflicts:
	AUTHORS
	Makefile