This adds a metrics packages that creates additional metrics. Add the metrics endpoint to the docker api server under `/metrics`. Signed-off-by: Michael Crosby <crosbymichael@gmail.com> Add metrics to daemon package Signed-off-by: Michael Crosby <crosbymichael@gmail.com> api: use standard way for metrics route Also add "type" query parameter Signed-off-by: Alexander Morozov <lk4d4@docker.com> Convert timers to ms Signed-off-by: Michael Crosby <crosbymichael@gmail.com> Upstream-commit: 3343d234f3b131d4be1d4ca84385e184633a79bd Component: engine