Minor install tweaks [1/2]

This pull request contains

- barclamp_install can now install stuff into /etc if barclamps contain a etc
  directory
- Extracted the crowbar init script the setup action and install it as a
  separte file
- cleaned up the crowbar init script, to make it a little less ugly. And
  added LSB Headers to it


 etc/init.d/crowbar                  | 38 +++++++++++++++++++++++++++++++++++++
 setup/01-crowbar-rake-tasks.install | 28 ++-------------------------
 2 files changed, 40 insertions(+), 26 deletions(-)

Crowbar-Pull-ID: c8601de183a0126162e53e4cc84bf648d1a9e211

Crowbar-Release: development