Add default sorting to trigger types API

CHANGELOG.rst

@@ -10,6 +10,11 @@ Added
 * Added ``-o`` and ``-m`` CLI options to ``st2-self-check`` script, to skip Orquesta and/or Mistral
   tests (#4347)
 
+Changed
+~~~~~~~
+
+* Triggertypes API now sorts by trigger ref by default. ``st2 trigger list`` will now show a sorted
+  list. (#4348)
 
 2.9.0 - September 16, 2018
 --------------------------

st2api/st2api/controllers/v1/triggers.py

@@ -53,6 +53,10 @@ class TriggerTypeController(resource.ContentPackResourceController):
         'sort': ['pack', 'name']
     }
 
+    query_options = {
+        'sort': ['ref']
+    }
+
     def get_all(self, exclude_attributes=None, include_attributes=None, sort=None, offset=0,
                 limit=None, requester_user=None, **raw_filters):
         return self._get_all(exclude_fields=exclude_attributes,