Skip another test which is fragile on Travis

Author: nyalldawson

tests/src/python/test_qgsactionmanager.py

@@ -154,6 +154,8 @@ def check_action_result(self, temp_file):
         return output
 
     @unittest.expectedFailure(platform.system() != 'Linux')
+    @unittest.skipIf(
+        os.environ.get('TRAVIS', '') == 'true', 'Test is flaky on Travis environment')
     def testDoAction(self):
         """ test running action """