Extend test timeout to 120s

This may help tests pass when running under 4 vcpus.  Also:

A following change adds more git operations to most of the tests.
This is because each git repo must be listed in the tenant config
file, and many tests share a tenant config with quite a number
of repos which they don't use.  We should improve the tests so that
they don't operate on repos that they don't need, but that will
take some work.

Change-Id: I91a327968359b3650fbe0477e99dc274a1fb6266

tests/base.py

@@ -1135,7 +1135,7 @@ class MySQLSchemaFixture(fixtures.Fixture):
 
 class BaseTestCase(testtools.TestCase):
     log = logging.getLogger("zuul.test")
-    wait_timeout = 20
+    wait_timeout = 30
 
     def attachLogs(self, *args):
         def reader():

tests/unit/test_scheduler.py

@@ -1368,7 +1368,7 @@ class TestScheduler(ZuulTestCase):
     def test_dependent_behind_dequeue(self):
         # This particular test does a large amount of merges and needs a little
         # more time to complete
-        self.wait_timeout = 90
+        self.wait_timeout = 120
         "test that dependent changes behind dequeued changes work"
         # This complicated test is a reproduction of a real life bug
         self.sched.reconfigure(self.config)

tox.ini

@@ -8,7 +8,7 @@ envlist = pep8, py27
 setenv = STATSD_HOST=127.0.0.1
          STATSD_PORT=8125
          VIRTUAL_ENV={envdir}
-         OS_TEST_TIMEOUT=90
+         OS_TEST_TIMEOUT=120
 passenv = ZUUL_TEST_ROOT OS_STDOUT_CAPTURE OS_STDERR_CAPTURE OS_LOG_CAPTURE OS_LOG_DEFAULTS
 usedevelop = True
 install_command = pip install {opts} {packages}