Comment 2 for bug 1805232

I've at least been able to track down that the command is blank in the .cfg file because we're receiving "Check command not found: check_haproxy_queue_depth.sh" and "
Check command not found: check_haproxy.sh".

This comes from charmhelpers.contrib.openstack.charmsupport.nrpe.Check._locate_cmd which is searching for the existence of these files to configure the command in the nrpe .cfg files.

Something is missing in charmhelpers included in 18.11 charms that used to install these bits, I feel.