Bump DC/OS metrics sha (introduces Prometheus endpoint)
Bump DC/OS metrics sha (introduces Prometheus endpoint)

kensipe/dcos,dcos/dcos,branden/dcos,dcos/dcos,surdy/dcos,mesosphere-mergebot/mergebot-test-dcos,branden/dcos,GoelDeepak/dcos,mesosphere-mergebot/mergebot-test-dcos,branden/dcos,mesosphere-mergebot/mergebot-test-dcos,GoelDeepak/dcos,surdy/dcos,mesosphere-mergebot/dcos,mesosphere-mergebot/dcos,mesosphere-mergebot/dcos,dcos/dcos,GoelDeepak/dcos,GoelDeepak/dcos,kensipe/dcos,kensipe/dcos,amitaekbote/dcos,mellenburg/dcos,amitaekbote/dcos,mellenburg/dcos,surdy/dcos,mellenburg/dcos,amitaekbote/dcos,branden/dcos,kensipe/dcos,mellenburg/dcos,dcos/dcos,dcos/dcos,surdy/dcos,mesosphere-mergebot/dcos,amitaekbote/dcos,mesosphere-mergebot/mergebot-test-dcos