NOTES
- depends simplejson
- start mongod with with --rest paramater

USAGE

- copy zabbix_mongo_plugin.py to /usr/share/zabbix/plugins/ as executable

- add this line to zabbix configuration file for mapped memory for example (/etc/zabbix/zabbbix_agentd.conf)

- add a new item called mongostats.mem_mapped to the zabbix