Updated Mesos isolation flag for new metrics module.
Updated Mesos isolation flag for new metrics module.

kensipe/dcos,dcos/dcos,GoelDeepak/dcos,surdy/dcos,surdy/dcos,kensipe/dcos,GoelDeepak/dcos,mesosphere-mergebot/dcos,mesosphere-mergebot/mergebot-test-dcos,GoelDeepak/dcos,mesosphere-mergebot/dcos,kensipe/dcos,dcos/dcos,mesosphere-mergebot/mergebot-test-dcos,mesosphere-mergebot/mergebot-test-dcos,mesosphere-mergebot/dcos,mesosphere-mergebot/mergebot-test-dcos,kensipe/dcos,GoelDeepak/dcos,surdy/dcos,dcos/dcos,dcos/dcos,surdy/dcos,dcos/dcos,mesosphere-mergebot/dcos