CI: Change migrations timeout to be >60 seoncds

In local testing, I found the migrations tended to take an
average of 70 seconds. Granted, my test machine is old, and slow
but the performance is very similar to a busy cloud provider.

As such, increase the timeout to a larger value so we can enable
the double migration test again.

Also use BASE_TEST_TIMEOUT as time limit for unit tests, failing
hard if that's passed.

Change-Id: Ida495d59bde977a20590c34e282c884a65ceab43

ironic/tests/base.py

@@ -72,6 +72,9 @@ def _patch_mock_callable(obj):
     return False
 
 
+BASE_TEST_TIMEOUT = os.environ.get('BASE_TEST_TIMEOUT', 60)
+
+
 class WarningsFixture(fixtures.Fixture):
     """Filters out warnings during test runs."""
 
@@ -190,6 +193,9 @@ class TestCase(oslo_test_base.BaseTestCase):
         self.policy = self.useFixture(policy_fixture.PolicyFixture())
         self.useFixture(WarningsFixture())
 
+        self.useFixture(fixtures.Timeout(int(BASE_TEST_TIMEOUT),
+                                         gentle=False))
+
         driver_factory.HardwareTypesFactory._extension_manager = None
         for factory in driver_factory._INTERFACE_LOADERS.values():
             factory._extension_manager = None

tox.ini

@@ -10,11 +10,11 @@ setenv = VIRTUAL_ENV={envdir}
          PYTHONDONTWRITEBYTECODE=1
          LANGUAGE=en_US
          LC_ALL=en_US.UTF-8
-         MIGRATIONS_TIMEOUT={env:MIGRATIONS_TIMEOUT:60}
+         BASE_TEST_TIMEOUT={env:BASE_TEST_TIMEOUT:60}
+         MIGRATIONS_TIMEOUT={env:MIGRATIONS_TIMEOUT:180}
          OS_LOG_CAPTURE={env:OS_LOG_CAPTURE:true}
          OS_STDOUT_CAPTURE={env:OS_STDOUT_CAPTURE:true}
          OS_STDERR_CAPTURE={env:OS_STDERR_CAPTURE:true}
-         OS_TEST_TIMEOUT={env:OS_TEST_TIMEOUT:30}
          PYTHONUNBUFFERED=1
          SQLALCHEMY_WARN_20=true
 deps =