User-configured hostname is not honored on remote postgres metrics

[jacobsmith]

I've got InstrumentalD running with the -H flag set to instrumentald. When I look at graphs that are on the same system (like system metrics), it sets the hostname to instrumentald as I would expect.

However, when I look at remote servers (i.e., the InstrumentalD config points to a separate server for the postgres:// metrics), I only see a UUID for the hostname.

I'm not yet sure if the issue is only with postgres connections or if it is with other remote connections as well.

@janxious pointed me towards this portion of the telegram conf erb file that may be affecting the hostname portion.

I'm certainly willing to help look in to this issue as well.

Thanks!