![Kevin Benton](/assets/img/avatar_default.png)
Register all sqlalchemy events through a new function in neutron.db.api so we can keep track of active events and ensure all are removed at the end of each test run. Without this, an instance of a plugin may be left around with the only reference to it existing in SQLAlchemy, where it will receive events for tests unrelated to it and potentially interfere. Change-Id: I8e93eb4e8ef5a13f015db9cd20e44941cdcb72ef