tas50/nagios — pull request #284 by maeldur (2014-06-16 18:55:42+00:00)
Title: allow exclusion hostgroups

Hello,

This change allows hostgroup verification for exclusion patterns as described in http://nagios.sourceforge.net/docs/3_0/objecttricks.html

For instance, the nagios_service:
```
{
"id": "load",
"hostgroup_name": "base,!",
"command_line": "$USER1$/check_nrpe -H $HOSTADDRESS$ -c check_load -t 20"
}
```
will now work as expected for a valid when compared to being dropped as a result of the hostgroup_name check.