gae_ts_mon: instrument Cloud Endpoint methods

appengine/chromium_try_flakes/handlers/test/flake_issues_test.py

Index: appengine/chromium_try_flakes/handlers/test/flake_issues_test.py
diff --git a/appengine/chromium_try_flakes/handlers/test/flake_issues_test.py b/appengine/chromium_try_flakes/handlers/test/flake_issues_test.py
index 631fe29a0bbe63b16ca5fba039da9f41e9a64fd0..8dc8f57e22e9df64c6b2b9168c9eb97b5fc952de 100644
--- a/appengine/chromium_try_flakes/handlers/test/flake_issues_test.py
+++ b/appengine/chromium_try_flakes/handlers/test/flake_issues_test.py
@@ -12,6 +12,7 @@ from google.appengine.ext import ndb
 
 from handlers.flake_issues import ProcessIssue, CreateFlakyRun
 import main
+from infra_libs import ts_mon
 from model.flake import Flake, FlakyRun, FlakeOccurrence
 from model.build_run import PatchsetBuilderRuns, BuildRun
 from testing_utils import testing
@@ -143,6 +144,7 @@ class FlakeIssuesTestCase(testing.AppengineTestCase):
 
   def setUp(self):
     super(FlakeIssuesTestCase, self).setUp()
+    ts_mon.reset_for_unittest(disable=True)
     self.mock_api = MockIssueTrackerAPI()
     self.patchers = [
         mock.patch('issue_tracker.issue_tracker_api.IssueTrackerAPI',