upgrade to etcd 0.2, add more logging to listener
Bump src/hm9000

Bump cloudfoundry/hm-workspace:
  Alex Suraci and Onsi Fakhouri:
     added the shredder ( Travis Failed: https://travis-ci.org/cloudfoundry/hm-workspace/builds/13060640 )
Bump src/hm9000

Bump cloudfoundry/hm-workspace:
  Eric Malm and Onsi Fakhouri:
     refactor sender ( Travis Success: https://travis-ci.org/cloudfoundry/hm-workspace/builds/13226216 )
  Alex Suraci and Onsi Fakhouri:
     added aws performance tests ( Travis Success: https://travis-ci.org/cloudfoundry/hm-workspace/builds/13177709 )
     bumping down concurrency level in integration tests.  will this help travis? ( Travis Success: https://travis-ci.org/cloudfoundry/hm-workspace/builds/13169469 )
     perhaps our integration test flakiness has been resolved? ( Travis Failed: https://travis-ci.org/cloudfoundry/hm-workspace/builds/13168570 )
     added support for deterministic evacuation ( Travis Failed: https://travis-ci.org/cloudfoundry/hm-workspace/builds/13068385 )