Merge "Provide a way to clean up testing database"

diff --cc heat/tests/utils.py
index 9d48f11b9d7fc532100388c29092730f6f40e256,8462e700be5395b5477b9cb57fe64619869b6036..bbd264596c19e37113b7c5e30f6574a74ad92a56
--- 1/heat/tests/utils.py
--- 2/heat/tests/utils.py
+++ b/heat/tests/utils.py
@@@ -12,12 -12,11 +12,14 @@@
  #    License for the specific language governing permissions and limitations
  #    under the License.
  
 -import sys
  import functools
 +import random
 +import string
 +import sys
 +import uuid
  
+ import sqlalchemy
+ 
  from heat.common import context
  from heat.common import exception
  from heat.engine import environment