Code review comment for lp://qastaging/~brad-marshall/charms/trusty/hacluster/add-nrpe-checks-update-charmhelpers

> As another comment, in the 15.01 release of the OpenStack charms,
> haproxy is now setup and configured on each service by default
> (it avoids port jumps, reconfig, the amount of work needed to be
> performed when clustering, etc). So I think that those charms need
> the haproxy check as well, but this will need to make sure it is
> okay to pair with a charm that has already enabled the haproxy
> nagios plugin. It may do so (I'm not overly familiar with nagios),
> but thought I'd drop it in and let you comment. Thanks.

My understanding is that it should already be monitoring haproxy
with the latest charms, but it could be made better - it seems
that there's only a process check, which isn't really sufficient.

I'll try to look into what we could do with this, and how it would
interact with the subordinate charms.

Brad.