[schema] Add permissions to transformation_sequence relation

migration/0.3.0_Any.py

+sync_schema_props_perms('transformation_sequence')

schema.py

@@ -199,7 +199,11 @@ class TransformationScript(_Script):
 
 
 class transformation_sequence(RelationDefinition):
-    # TODO __permissions__
+    __permissions__ = {
+        'read': ('managers', 'users'),
+        'add': (RRQLExpression('U has_update_permission S'), ),
+        'delete': (RRQLExpression('U has_update_permission S'), ),
+    }
     subject = 'DataTransformationProcess'
     object = 'TransformationSequence'
     cardinality = '1*'