ansible: forward exceptions as job results too.

Ref #191.

ansible_mitogen/runner.py

@@ -157,8 +157,11 @@ class Runner(object):
             Module result dictionary.
         """
         self.setup()
+        try:
             try:
                 self._send_result(self._run())
+            except Exception as e:
+                self._send_result(mitogen.core.CallError(e))
         finally:
             self.revert()