e2e: use dockercontroller to test proxy

passbook/outposts/controllers/base.py

@@ -35,11 +35,7 @@ class BaseController:
         """Call .up() but capture all log output and return it."""
         with capture_logs() as logs:
             self.up()
-        log_messages = []
-        for log in logs:
-            self.logger.debug(**log)
-            log_messages.append(f"{log['controller']}: {log['event']}")
-        return log_messages
+        return [f"{x['controller']}: {x['event']}" for x in logs]
 
     def down(self):
         """Handler to delete everything we've created"""