Merge branch 'add_storage_endpoint' into 'master'

Add storage endpoint

See merge request !79

app/controllers/sites_controller.rb

@@ -75,7 +75,7 @@ class SitesController < ResourcesController
 
   def links_for_item(item)
     links = super(item)
-    %w[jobs deployments vlans metrics].each do |rel|
+    %w[jobs deployments vlans metrics storage].each do |rel|
       links.push({
                    'rel' => rel,
                    'type' => api_media_type(:g5kcollectionjson),

spec/controllers/sites_controller_spec.rb

@@ -72,6 +72,7 @@ describe SitesController do
         self
         servers
         status
+        storage
         version
         versions
         vlans