Only print out the allow_empty_hostgroup_assingment directive if installing via source
Only print out the allow_empty_hostgroup_assingment directive if installing via source

Source installs are the correct version of Nagios for this feature.  I
confirmed that this directive on an older version of Nagios causes the
service to fail to start.

cookbooks/oc-nagios,bitmonk/chef-nagios,bitmonk/chef-nagios,earzur/nagios,mrlamroger/nagios,schubergphilis/nagios,popsikle/nagios-5.3.5,mconf-cookbooks/nagios,OpenGov/nagios,ChrisLundquist/nagios,cookbooks/oc-nagios,jtimberman/nagios,Piousbox-cookbooks/nagios,Piousbox-cookbooks/nagios,JulianNL/nagios,ovaistariq/nagios,polamjag/nagios,schubergphilis/nagios,spudnic/nagios,mconf-cookbooks/nagios,ovaistariq/nagios,mrlamroger/nagios,OpenGov/nagios,bitmonk/chef-nagios,spudnic/nagios,lusis/nagios,polamjag/nagios,CanaryTek/nagios,aaronkvanmeerten/nagios,mrlamroger/nagios,aaronkvanmeerten/nagios,earzur/nagios,schubergphilis/nagios,mrlamroger/nagios,earzur/nagios,ChrisLundquist/nagios,caleb/nagios,firebase/nagios,JulianNL/nagios,polamjag/nagios,bitmonk/chef-nagios,CanaryTek/nagios,caleb/nagios,CanaryTek/nagios,jtimberman/nagios,hnakamur/nagios,spudnic/nagios,mattupstate/nagios,jtimberman/nagios,JulianNL/nagios,ovaistariq/nagios,cookbooks/oc-nagios,mconf-cookbooks/nagios,popsikle/nagios-5.3.5,mattupstate/nagios,firebase/nagios,OpenGov/nagios,Piousbox-cookbooks/nagios,OpenGov/nagios,mattupstate/nagios,ChrisLundquist/nagios,aaronkvanmeerten/nagios,spudnic/nagios,JulianNL/nagios,firebase/nagios,pierreozoux/nagios,Springest/nagios,firebase/nagios,Piousbox-cookbooks/nagios