removed SITES constant. replaced with globals.yaml config file

generators/grid5000.rb

@@ -2,6 +2,7 @@ require 'pp'
 require 'rubygems'
 require 'fileutils'
 require 'json/pure'
+require 'yaml'
 require 'time'
 require File.dirname(__FILE__)+'/lib/core_extensions'
 require File.dirname(__FILE__)+'/lib/g5k_generator'

generators/input/globals.yaml

+sites: 
+  - bordeaux
+  - grenoble
+  - lille
+  - lyon
+  - nancy
+  - orsay
+  - rennes
+  - sophia
+  - toulouse
\ No newline at end of file

generators/lib/g5k_generator.rb

 require 'resolv'
 
 module G5K
-  SITES = %w{rennes grenoble bordeaux toulouse sophia orsay nancy lille lyon}
   
   class Tree < Hash
     attr_reader :contents, :path