Move timer tests to commitConfigUpdate

These can't use simple_layout because they need to make changes
before loading the timer configuration, so use the new
commitConfigUpdate method to swap in their configuration.  Update
it to ensure that all necessary playbooks are created.

Change-Id: I3ad25d6db2030c2aae884700115b095e8f481f2c
diff --git a/tests/unit/test_scheduler.py b/tests/unit/test_scheduler.py
index 60fd0ca..04a263b 100755
--- a/tests/unit/test_scheduler.py
+++ b/tests/unit/test_scheduler.py
@@ -1742,11 +1742,13 @@
 
     def test_abandoned_not_timer(self):
         "Test that an abandoned change does not cancel timer jobs"
-
+        # This test can not use simple_layout because it must start
+        # with a configuration which does not include a
+        # timer-triggered job so that we have an opportunity to set
+        # the hold flag before the first job.
         self.executor_server.hold_jobs_in_build = True
-
         # Start timer trigger - also org/project
-        self.updateConfigLayout('layout-idle')
+        self.commitConfigUpdate('common-config', 'layouts/idle.yaml')
         self.sched.reconfigure(self.config)
         # The pipeline triggers every second, so we should have seen
         # several by now.
@@ -1755,9 +1757,9 @@
         # Stop queuing timer triggered jobs so that the assertions
         # below don't race against more jobs being queued.
         # Must be in same repo, so overwrite config with another one
-        self.commitLayoutUpdate('layout-idle', 'layout-no-timer')
-
+        self.commitConfigUpdate('common-config', 'layouts/no-timer.yaml')
         self.sched.reconfigure(self.config)
+
         self.assertEqual(len(self.builds), 2, "Two timer jobs")
 
         A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A')
@@ -2695,8 +2697,12 @@
 
     def test_timer(self):
         "Test that a periodic job is triggered"
+        # This test can not use simple_layout because it must start
+        # with a configuration which does not include a
+        # timer-triggered job so that we have an opportunity to set
+        # the hold flag before the first job.
         self.executor_server.hold_jobs_in_build = True
-        self.updateConfigLayout('layout-timer')
+        self.commitConfigUpdate('common-config', 'layouts/timer.yaml')
         self.sched.reconfigure(self.config)
 
         # The pipeline triggers every second, so we should have seen
@@ -2709,14 +2715,14 @@
         port = self.webapp.server.socket.getsockname()[1]
 
         req = urllib.request.Request(
-            "http://localhost:%s/openstack/status" % port)
+            "http://localhost:%s/tenant-one/status" % port)
         f = urllib.request.urlopen(req)
         data = f.read()
 
         self.executor_server.hold_jobs_in_build = False
         # Stop queuing timer triggered jobs so that the assertions
         # below don't race against more jobs being queued.
-        self.commitLayoutUpdate('layout-timer', 'layout-no-timer')
+        self.commitConfigUpdate('common-config', 'layouts/no-timer.yaml')
         self.sched.reconfigure(self.config)
         self.executor_server.release()
         self.waitUntilSettled()
@@ -2739,13 +2745,18 @@
 
     def test_idle(self):
         "Test that frequent periodic jobs work"
+        # This test can not use simple_layout because it must start
+        # with a configuration which does not include a
+        # timer-triggered job so that we have an opportunity to set
+        # the hold flag before the first job.
         self.executor_server.hold_jobs_in_build = True
-        self.updateConfigLayout('layout-idle')
 
         for x in range(1, 3):
             # Test that timer triggers periodic jobs even across
             # layout config reloads.
             # Start timer trigger
+            self.commitConfigUpdate('common-config',
+                                    'layouts/idle.yaml')
             self.sched.reconfigure(self.config)
             self.waitUntilSettled()
 
@@ -2755,7 +2766,8 @@
 
             # Stop queuing timer triggered jobs so that the assertions
             # below don't race against more jobs being queued.
-            before = self.commitLayoutUpdate('layout-idle', 'layout-no-timer')
+            self.commitConfigUpdate('common-config',
+                                    'layouts/no-timer.yaml')
             self.sched.reconfigure(self.config)
             self.waitUntilSettled()
             self.assertEqual(len(self.builds), 2,
@@ -2764,11 +2776,6 @@
             self.waitUntilSettled()
             self.assertEqual(len(self.builds), 0)
             self.assertEqual(len(self.history), x * 2)
-            # Revert back to layout-idle
-            repo = git.Repo(os.path.join(self.test_root,
-                                         'upstream',
-                                         'layout-idle'))
-            repo.git.reset('--hard', before)
 
     @simple_layout('layouts/smtp.yaml')
     def test_check_smtp_pool(self):
@@ -2800,8 +2807,12 @@
 
     def test_timer_smtp(self):
         "Test that a periodic job is triggered"
+        # This test can not use simple_layout because it must start
+        # with a configuration which does not include a
+        # timer-triggered job so that we have an opportunity to set
+        # the hold flag before the first job.
         self.executor_server.hold_jobs_in_build = True
-        self.updateConfigLayout('layout-timer-smtp')
+        self.commitConfigUpdate('common-config', 'layouts/timer-smtp.yaml')
         self.sched.reconfigure(self.config)
 
         # The pipeline triggers every second, so we should have seen
@@ -2834,7 +2845,7 @@
 
         # Stop queuing timer triggered jobs and let any that may have
         # queued through so that end of test assertions pass.
-        self.commitLayoutUpdate('layout-timer-smtp', 'layout-no-timer')
+        self.commitConfigUpdate('common-config', 'layouts/no-timer.yaml')
         self.sched.reconfigure(self.config)
         self.waitUntilSettled()
         self.executor_server.release('.*')