Use oslotest instead of common test module

Module openstack.common.test is obsolete, so we should use
oslotest library instead of it.
Modified tests and common database code, new requirement added.

Change-Id: I853e548f11a4c3785eaf75124510a6d789536634

tests/unit/test_lockutils.py

@@ -26,15 +26,15 @@ import eventlet
 from eventlet import greenpool
 from eventlet import greenthread
 from oslo.config import cfg
+from oslotest import base as test_base
 from six import moves
 
 from openstack.common.fixture import config
 from openstack.common.fixture import lockutils as fixtures
 from openstack.common import lockutils
-from openstack.common import test
 
 
-class TestFileLocks(test.BaseTestCase):
+class TestFileLocks(test_base.BaseTestCase):
 
     def test_concurrent_green_lock_succeeds(self):
         """Verify spawn_n greenthreads with two locks run concurrently."""
@@ -70,7 +70,7 @@ class TestFileLocks(test.BaseTestCase):
                 shutil.rmtree(tmpdir)
 
 
-class LockTestCase(test.BaseTestCase):
+class LockTestCase(test_base.BaseTestCase):
 
     def setUp(self):
         super(LockTestCase, self).setUp()
@@ -373,7 +373,7 @@ class BrokenLock(lockutils._FileLock):
         raise err
 
 
-class FileBasedLockingTestCase(test.BaseTestCase):
+class FileBasedLockingTestCase(test_base.BaseTestCase):
     def setUp(self):
         super(FileBasedLockingTestCase, self).setUp()
         self.lock_dir = tempfile.mkdtemp()
@@ -460,7 +460,7 @@ class FileBasedLockingTestCase(test.BaseTestCase):
         self.assertEqual(call_list, ['other', 'other', 'main', 'main'])
 
 
-class LockutilsModuleTestCase(test.BaseTestCase):
+class LockutilsModuleTestCase(test_base.BaseTestCase):
 
     def setUp(self):
         super(LockutilsModuleTestCase, self).setUp()
@@ -494,7 +494,7 @@ class LockutilsModuleTestCase(test.BaseTestCase):
         self.assertEqual(retval, 0, "Bad OSLO_LOCK_PATH has been set")
 
 
-class TestLockFixture(test.BaseTestCase):
+class TestLockFixture(test_base.BaseTestCase):
 
     def setUp(self):
         super(TestLockFixture, self).setUp()

tests/unit/test_processutils.py

@@ -20,13 +20,13 @@ import os
 import tempfile
 
 import fixtures
+from oslotest import base as test_base
 import six
 
 from openstack.common import processutils
-from openstack.common import test
 
 
-class UtilsTest(test.BaseTestCase):
+class UtilsTest(test_base.BaseTestCase):
     # NOTE(jkoelker) Moar tests from nova need to be ported. But they
     #                need to be mock'd out. Currently they requre actually
     #                running code.
@@ -36,7 +36,7 @@ class UtilsTest(test.BaseTestCase):
                           hozer=True)
 
 
-class ProcessExecutionErrorTest(test.BaseTestCase):
+class ProcessExecutionErrorTest(test_base.BaseTestCase):
 
     def test_defaults(self):
         err = processutils.ProcessExecutionError()
@@ -211,7 +211,7 @@ def fake_execute_raises(*cmd, **kwargs):
                                                   'command'])
 
 
-class TryCmdTestCase(test.BaseTestCase):
+class TryCmdTestCase(test_base.BaseTestCase):
     def test_keep_warnings(self):
         self.useFixture(fixtures.MonkeyPatch(
             'openstack.common.processutils.execute', fake_execute))
@@ -261,7 +261,7 @@ class FakeSshConnection(object):
                 six.StringIO('stderr'))
 
 
-class SshExecuteTestCase(test.BaseTestCase):
+class SshExecuteTestCase(test_base.BaseTestCase):
     def test_invalid_addl_env(self):
         self.assertRaises(processutils.InvalidArgumentError,
                           processutils.ssh_execute,