Bump src/hm9000

Update ETCD job to drop info file before running ETCD.  Also starting
ETCD in snapshot mode which should help with memory consumption.
Maybe.

Bump cloudfoundry/hm-workspace:
  Onsi Fakhouri and Sarah Chandler:
     bump hm9000 submodule ( Travis created: https://travis-ci.org/cloudfoundry/hm-workspace/builds/12681532 )
     api server in the CLI ( Travis Success: https://travis-ci.org/cloudfoundry/hm-workspace/builds/12641480 )
     beginnings of API server; remove fakestore ( Travis Success: https://travis-ci.org/cloudfoundry/hm-workspace/builds/12639057 )