squash! Introduce sso_provider_roles_eb6 to prepare for custom doctri…

…ne types - Update tests to delete sso_provider_roles_eb6 as well

src/OpenConext/EngineBlockFunctionalTestingBundle/Fixtures/ServiceRegistryFixture.php

@@ -121,7 +121,6 @@ public function reset()
         $queryBuilder = $this->entityManager->getConnection()->createQueryBuilder();
         $queryBuilder
             ->delete('sso_provider_roles_eb5')
-            ->delete('sso_provider_roles_eb6')
             ->execute();
 
         return $this;