[Hawkular-dev] need discussion around how we are going to do domain support

[John Mazzitelli]

The current plan is to have a metrics-only agent run in the slave server. It will write a file indicating what its jmx exporter endpoint is. The host agent will probe a directory where the slave agents write their files - when new files are discovered, the agent will change its resource configuration "Metrics Endpoint" thus triggering an inventory update. When the server sees this update, it will write out new P scrape endpoint configs so P knows to scrape the slave endpoints, too.

Requires a change to the agent as well as server side.