[travis] Disable flaky test

See https://travis-ci.org/qgis/QGIS/jobs/278224577
#5230 (comment)

Author: m-kuhn

tests/src/python/test_qgsactionmanager.py

@@ -154,8 +154,7 @@ 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')
+    @unittest.skipIf(os.environ.get('TRAVIS', '') == 'true', 'Test is flaky on Travis environment')
     def testDoAction(self):
         """ test running action """
 

tests/src/python/test_qgsserver_wms.py

@@ -64,6 +64,7 @@ def wms_request_compare(self, request, extra=None, reference_file=None):
 
         self.assertXMLEqual(response, expected, msg="request %s failed.\nQuery: %s\nExpected file: %s\nResponse:\n%s" % (query_string, request, reference_path, response.decode('utf-8')))
 
+    @unittest.skipIf(os.environ.get('TRAVIS', '') == 'true', 'Test is flaky on Travis environment')
     def test_project_wms(self):
         """Test some WMS request"""
         for request in ('GetCapabilities', 'GetProjectSettings', 'GetContext'):