Skip the external network connection test

Change-Id: I7a12483fc0d8a678f6c9b322ee327481b84ce1fe

qinling_tempest_plugin/config.py

@@ -45,4 +45,8 @@ QinlingGroup = [
     cfg.StrOpt("nodejs_runtime_image",
                default="openstackqinling/nodejs-runtime:0.0.1",
                help="The NodeJS runtime being used in the tests."),
+    cfg.BoolOpt("allow_external_connection",
+                default=False,
+                help="If the tests which need external network connection "
+                     "should be running."),
 ]

qinling_tempest_plugin/tests/api/test_executions.py

@@ -19,11 +19,14 @@ import requests
 
 import futurist
 from oslo_serialization import jsonutils
+from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions
+import testtools
 
 from qinling_tempest_plugin.tests import base
 
+CONF = config.CONF
 INVOKE_ERROR = "Function execution failed because of too much resource " \
                "consumption"
 
@@ -492,6 +495,8 @@ class ExecutionsTest(base.BaseQinlingTest):
         self.assertLessEqual(lower, first_duration)
 
     @decorators.idempotent_id('07edf2ff-7544-4f30-b006-fd5302a2a9cc')
+    @testtools.skipUnless(CONF.qinling.allow_external_connection,
+                          "External network connection is not allowed")
     def test_python_execution_public_connection(self):
         """Test connections from k8s pod to the outside.