Add clientScopeSql helper for client-scoped list queries

agent/reports/credential_rotation.php

@@ -16,6 +16,7 @@ $passwords_not_rotated_sql = mysqli_query($mysqli,
         FROM credentials
         LEFT JOIN clients ON credential_client_id = client_id
         WHERE DATE(credential_password_changed_at) < DATE_SUB(CURDATE(), INTERVAL $days DAY)
+        " . clientScopeSql('credential_client_id') . "
         ORDER BY client_name"
 );