Normalize local node hostname across API fixtures

- This was causing the fixture data to be wrongly "repaired" in Model\User::getOwnerDataById because of a mismatch between the local base URL and the fixture-provided self contact URL

tests/DatabaseTestTrait.php

@@ -35,7 +35,7 @@ trait DatabaseTestTrait
 		// Rollbacks every DB usage (in case the test couldn't call tearDown)
 		StaticDatabase::statRollback();
 		// Rollback the first, outer transaction just 2 be sure
-		StaticDatabase::getGlobConnection()->rollBack();
+		StaticDatabase::getGlobConnection()->rollback();
 		// Start the first, outer transaction
 		StaticDatabase::getGlobConnection()->beginTransaction();
 	}