config_stages_unittest: mark network tests

These two tests access the network (via `gsutil ls`),
so mark them as such.

BUG=None
TEST=tests no longer hang w/out network

Change-Id: I2392589793f6a0c8c23f4f6f6d4a1ed5eec932f0
Reviewed-on: https://chromium-review.googlesource.com/372281
Reviewed-by: Ningning Xia <nxia@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/cbuildbot/stages/config_stages_unittest.py b/cbuildbot/stages/config_stages_unittest.py
index 966a5f7..3129a3f 100644
--- a/cbuildbot/stages/config_stages_unittest.py
+++ b/cbuildbot/stages/config_stages_unittest.py
@@ -11,6 +11,7 @@
 from chromite.cbuildbot import constants
 from chromite.cbuildbot import repository
 from chromite.lib import cros_build_lib
+from chromite.lib import cros_test_lib
 from chromite.lib import git
 
 
@@ -34,6 +35,7 @@
   def ConstructStage(self):
     return config_stages.CheckTemplateStage(self._run)
 
+  @cros_test_lib.NetworkTest()
   def testBasic(self):
     stage = self.ConstructStage()
 
@@ -42,6 +44,7 @@
     stage.PerformStage()
     self.assertTrue(self.update_mock.call_count == 2)
 
+  @cros_test_lib.NetworkTest()
   def testSortAndGetReleasePaths(self):
     stage = self.ConstructStage()