Expose metrics using go-metrics (#683)#688

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slaunay wants to merge 2 commits intoIBM:masterfrom slaunay:enhancement/metrics

+346-14

Commits on Jun 29, 2016

Expose metrics using go-metrics (IBM#683 )
slaunay
committed

Commits on Jul 4, 2016

Refactor metric gathering for produce request
slaunay
committed