introduce Google Cloud Bucket support #51

Author: ccancellieri

ckanext/cloudstorage/storage.py

@@ -340,7 +340,8 @@ def get_url_from_filename(self, rid, filename, content_type=None):
         try:
             return self.driver.get_object_cdn_url(obj)
         except NotImplementedError:
-            if 'S3' in self.driver_name:
+            if 'S3' in self.driver_name \
+                or 'GOOGLE_STORAGE' in self.driver_name:
                 return urlparse.urljoin(
                     'https://' + self.driver.connection.host,
                     '{container}/{path}'.format(