icinga: raise timeout of check_job_queue nrpe command

The check_job_queue being run on terbium.eqiad.wmnet keeps timing out.
Supposedly because the check_job_queue scripts takes longer than 10
seconds to execute.

I have made nrpe::monitor_service() to accept a timeout parameter
earlier. So raise the timeout of check_job_queue to 30 seconds, should
be good enough.

Change-Id: I0e2ce940ca74a43379d15eaae1c294a64fa2c821
Merge "icinga: raise timeout of check_job_queue nrpe command" into production