nagios: Fix path to source zulip_nagios.cfg.
nagios: Fix path to source zulip_nagios.cfg.

Arguably, we should make this a symlink, but it's probably a good idea
to have every change in the production Nagios configuration go through
the zulip-puppet-apply diff experience.

hackerkid/zulip,timabbott/zulip,brainwane/zulip,kou/zulip,brockwhittaker/zulip,eeshangarg/zulip,Galexrt/zulip,synicalsyntax/zulip,andersk/zulip,rishig/zulip,rht/zulip,Galexrt/zulip,mahim97/zulip,dhcrzf/zulip,hackerkid/zulip,Galexrt/zulip,kou/zulip,rishig/zulip,brainwane/zulip,Galexrt/zulip,jackrzhang/zulip,kou/zulip,hackerkid/zulip,shubhamdhama/zulip,timabbott/zulip,andersk/zulip,shubhamdhama/zulip,punchagan/zulip,showell/zulip,eeshangarg/zulip,mahim97/zulip,mahim97/zulip,showell/zulip,timabbott/zulip,timabbott/zulip,zulip/zulip,zulip/zulip,punchagan/zulip,dhcrzf/zulip,brockwhittaker/zulip,jackrzhang/zulip,showell/zulip,hackerkid/zulip,tommyip/zulip,punchagan/zulip,shubhamdhama/zulip,timabbott/zulip,rht/zulip,dhcrzf/zulip,kou/zulip,eeshangarg/zulip,andersk/zulip,punchagan/zulip,synicalsyntax/zulip,rht/zulip,brainwane/zulip,mahim97/zulip,kou/zulip,showell/zulip,mahim97/zulip,tommyip/zulip,andersk/zulip,synicalsyntax/zulip,punchagan/zulip,jackrzhang/zulip,brainwane/zulip,Galexrt/zulip,eeshangarg/zulip,rht/zulip,synicalsyntax/zulip,synicalsyntax/zulip,dhcrzf/zulip,eeshangarg/zulip,tommyip/zulip,dhcrzf/zulip,tommyip/zulip,jackrzhang/zulip,mahim97/zulip,showell/zulip,synicalsyntax/zulip,brockwhittaker/zulip,shubhamdhama/zulip,hackerkid/zulip,eeshangarg/zulip,rishig/zulip,rht/zulip,hackerkid/zulip,kou/zulip,brainwane/zulip,brockwhittaker/zulip,synicalsyntax/zulip,rishig/zulip,punchagan/zulip,brainwane/zulip,kou/zulip,timabbott/zulip,zulip/zulip,dhcrzf/zulip,tommyip/zulip,rht/zulip,punchagan/zulip,rishig/zulip,jackrzhang/zulip,andersk/zulip,brainwane/zulip,tommyip/zulip,dhcrzf/zulip,zulip/zulip,brockwhittaker/zulip,zulip/zulip,showell/zulip,brockwhittaker/zulip,shubhamdhama/zulip,rishig/zulip,timabbott/zulip,showell/zulip,jackrzhang/zulip,andersk/zulip,tommyip/zulip,hackerkid/zulip,shubhamdhama/zulip,zulip/zulip,rht/zulip,shubhamdhama/zulip,andersk/zulip,Galexrt/zulip,zulip/zulip,jackrzhang/zulip,rishig/zulip,eeshangarg/zulip,Galexrt/zulip