Backport: Migrate armon/go-metrics to hashicorp/go-metrics and update Go dependencies to 1.8.x#1173

paras-gupta2 merged 10 commits into

release/1.8.xhashicorp/consul-dataplane:release/1.8.xfrom

deps/update-go-dependencies-1.8.xhashicorp/consul-dataplane:deps/update-go-dependencies-1.8.xCopy head branch name to clipboard