Implement changes to setup chef-server environment 

The default recipe will setup environment for chef-server.
So user can run $ chef-server-setup command to install and configure chef-server.
@adamedx 
We are using chef-server cookbook which take cares of chef-server package download/install.
This cookbook uses Omnitruck API to form chef-server package url. Currently Omnitruck  API gives us old chef-server even if we request for latest, seems its due some kind of bug. So using hard-coded chef-server url. 

I think we need to override chef-server cookbook to use chef's 'apt-repo' to download/install chef-server pkg.
Or
Lets don't use chef-server cookbook and write new recipe which will install chef-server by using apt -repo.