Myself, Steven Tobin and Wojciech Trocki have done extensive investigation and have decided that the directory scanning feature in Grafana is a viable approach. The result of this investigation is two new tickets that will result in working auto dashboard discovery.

1. Fix Upstream issue in Grafana's file reader. - https://issues.jboss.org/browse/AEROGEAR-1885
2. Implement Auto Dashboard Discovery in metrics-apb using new Grafana features-
https://issues.jboss.org/browse/AEROGEAR-1886

I am now going to close this ticket as 'done.'