Expose broker metrics with go-metrics#701

Merged

eapache merged 5 commits intoIBM:masterfrom slaunay:enhancement/broker-metrics

Aug 30, 2016

+563-49

Commits on Jul 12, 2016

Expose broker metrics with go-metrics
slaunay
committed

Commits on Jul 13, 2016

Commits on Aug 15, 2016

Minor changes
slaunay
committed