Fix db error when running python34 unit tests
Fix db error when running python34 unit tests

If tests for py27 is executed before py34 tests, then testrepository may
create a database that python 3.4 cannot use.

Change-Id: I0c43ff92f1fadced9ebc188bc1b902a7ec65f669
Closes-bug: #1489059
pombredanne/bandit,chair6/bandit,stackforge/bandit,pombredanne/bandit,stackforge/bandit