Make ganglia::web trusty aware and puppetized

ganglia web was actually unpuppetized on nickel. While trying not to
touch the existing installation at all cleanup and introduce trusty
support for ganglia web while using the distribution's package and
configuring it. Steps are:

* Add a conf_production.php file that only get's populated on trusty
* Install distribution package (only on trusty)
* Clean up package declarations
* Clean up labs

Still a long way to go though before this class is up to standards

Change-Id: I1d39b8a1b04001382a8a3989c4ff7d6d780d56ff
Merge "Make ganglia::web trusty aware and puppetized" into production