Avoid accidentally moving cf-release sha on CI

Signed-off-by: Alex Suraci <asuraci@pivotallabs.com>
Bump src/converger, src/etcd, src/etcd-metrics-server, src/executor, src/inigo, src/linux-circus, src/rep, src/runtime-metrics-server, src/stager, src/warden-linux

Bump cloudfoundry-incubator/converger:
  Matthew Sykes:
     Add license ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/converger/builds/32470020 )
Bump coreos/etcd:
  Yicheng Qin:
     Merge pull request #927 from bmatsuo/topic/Documentation/fix-tuning-timeout-toml ( Travis Unknown )
  Bryan Matsuo:
     Documentation: fix timeout tuning TOML example ( Travis Unknown )
Bump cloudfoundry-incubator/etcd-metrics-server:
  Matthew Sykes:
     Add license ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/etcd-metrics-server/builds/32470093 )
Bump cloudfoundry-incubator/executor:
  Matthew Sykes:
     Add license ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/executor/builds/32470278 )
Bump cloudfoundry-incubator/inigo:
  Matthew Sykes:
     Add license
  Alex Suraci:
     Use more minimal docker image in docker test
Bump cloudfoundry-incubator/linux-circus:
  Matthew Sykes:
     Add license ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/linux-circus/builds/32470849 )
Bump cloudfoundry-incubator/rep:
  Matthew Sykes:
     Add license ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/rep/builds/32471060 )
Bump cloudfoundry-incubator/runtime-metrics-server:
  Matthew Sykes:
     Add license ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/runtime-metrics-server/builds/32471123 )
Bump cloudfoundry-incubator/stager:
  Matthew Sykes:
     Add license ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/stager/builds/32471157 )
Bump cloudfoundry-incubator/warden-linux:
  Alex Suraci:
     kill link processes hard
     Add logging when create.sh and start.sh are run
     Make hooks/setup compatible w/ minimal rootfs
  Matthew Sykes:
     Add license