Revert "Removes ssh service"

This reverts commit d90ea8f1db4f094bdc4c0c7d93cd4cd54babff21.
Solves the ubuntu 14.04 init problem

  Fixes #9

  Ubuntu 14.04 ships with multiple init systems, somewhat breaking
  conventional use of the service resource.
Merge pull request #11 from stack-up/bug/ubuntu_14.4_init

Bug/ubuntu 14.4 init