feature #1370: make sunstone server compatible with rackup

src/sunstone/config.ru

@@ -0,0 +1,12 @@
+
+# If you are using self contained installation set this variable to the
+# install location
+#ENV['ONE_LOCATION']='/path/to/OpenNebula/install'
+
+WITH_RACKUP=true
+
+$: << '.'
+require 'sunstone-server'
+
+run Sinatra::Application
+

src/sunstone/sunstone-server.rb

@@ -408,4 +408,5 @@ post '/:resource/:id/action' do
                                    request.body.read)
 end
 
-Sinatra::Application.run!
+Sinatra::Application.run! if(!defined?(WITH_RACKUP))
+