Fixes the failing unit-tests

The tests were failing because of multiple processes
used by testr while executing the tests.
These multiple processes used to run multiple setUp/setUpClass
before the execution of complimentary tearDown/tearDownClass.

Updated tests to use unique names for datastore and datastore version,
by substituting the uuid with name to make it unique.

Change-Id: I6c4228c0e540dc9d1f5f310a919ee32decb7cc94
Closes-Bug: #1468883

trove/tests/unittests/instance/test_instance_models.py

@@ -116,13 +116,13 @@ class CreateInstanceTest(trove_testtools.TestCase):
         self.users = []
         self.datastore = datastore_models.DBDatastore.create(
             id=str(uuid.uuid4()),
-            name='mysql',
+            name='mysql' + str(uuid.uuid4()),
         )
         self.datastore_version = (
             datastore_models.DBDatastoreVersion.create(
                 id=str(uuid.uuid4()),
                 datastore_id=self.datastore.id,
-                name="5.5",
+                name="5.5" + str(uuid.uuid4()),
                 manager="mysql",
                 image_id="image_id",
                 packages="",
@@ -220,12 +220,12 @@ class TestReplication(trove_testtools.TestCase):
 
         self.datastore = datastore_models.DBDatastore.create(
             id=str(uuid.uuid4()),
-            name='name',
+            name='name' + str(uuid.uuid4()),
             default_version_id=str(uuid.uuid4()))
 
         self.datastore_version = datastore_models.DBDatastoreVersion.create(
             id=self.datastore.default_version_id,
-            name='name',
+            name='name' + str(uuid.uuid4()),
             image_id=str(uuid.uuid4()),
             packages=str(uuid.uuid4()),
             datastore_id=self.datastore.id,

trove/tests/unittests/instance/test_instance_status.py

@@ -49,13 +49,13 @@ class BaseInstanceStatusTestCase(trove_testtools.TestCase):
             ServiceStatuses.RUNNING)
         self.datastore = models.DBDatastore.create(
             id=str(uuid.uuid4()),
-            name='mysql',
+            name='mysql' + str(uuid.uuid4()),
             default_version_id=self.db_info.datastore_version_id
         )
         self.version = models.DBDatastoreVersion.create(
             id=self.db_info.datastore_version_id,
             datastore_id=self.datastore.id,
-            name='5.5',
+            name='5.5' + str(uuid.uuid4()),
             manager='mysql',
             image_id=str(uuid.uuid4()),
             active=1,

trove/tests/unittests/mgmt/test_models.py

@@ -48,13 +48,13 @@ class MockMgmtInstanceTest(trove_testtools.TestCase):
         cls.version_id = str(uuid.uuid4())
         cls.datastore = datastore_models.DBDatastore.create(
             id=str(uuid.uuid4()),
-            name='mysql',
+            name='mysql' + str(uuid.uuid4()),
             default_version_id=cls.version_id
         )
         cls.version = datastore_models.DBDatastoreVersion.create(
             id=cls.version_id,
             datastore_id=cls.datastore.id,
-            name='5.5',
+            name='5.5' + str(uuid.uuid4()),
             manager='mysql',
             image_id=str(uuid.uuid4()),
             active=1,