Issue #3228237 by DamienMcKenna, quietone: Always sort tables in db-tools.php dump

(cherry picked from commit 2eebc002)

core/lib/Drupal/Core/Command/DbDumpCommand.php

@@ -122,6 +122,9 @@ protected function getTables(Connection $connection) {
       }
     }
 
+    // Keep the table names sorted alphabetically.
+    asort($tables);
+
     return $tables;
   }