Upgrade ETCD to v0.2 (final)

Bump src/hm9000

Bump cloudfoundry/hm-workspace:
  Onsi Fakhouri:
     hm9000 uses etcd v0.2 (final); hm9000 namespaces all its etcd storage under /hm ( Travis Success: https://travis-ci.org/cloudfoundry/hm-workspace/builds/16547325 )