Added options to teagent public cookbook

* repo_setup, agent_utils, proxy_{user,pass} attributes added to
cookbook.
* Version bump to 0.0.2
Added support for 14.04

* Updated condition in dependency check - added 14.04 as supported
version.
Merge pull request #1 from shredder12/master

General update to the cookbook, bringing it to the most recent state (option wise)