[FIX] l10n_lu: fix the migration script

The migration script for taxes was forward-ported without changes from 15.0 to master. However, it should be done differently since saas-16.2.

closes odoo/odoo#145338

X-original-commit: d5179bf65294bced57877579c56deb9e72ecb177
Signed-off-by: Brice Bartoletti (bib) <bib@odoo.com>
Signed-off-by: Aliya Tastemirova (alta) <alta@odoo.com>

addons/l10n_lu/migrations/2.2/end-migrate_update_taxes.py

@@ -1,6 +0,0 @@
-# Part of Odoo. See LICENSE file for full copyright and licensing details.
-from odoo.addons.account.models.chart_template import update_taxes_from_templates
-
-
-def migrate(cr, version):
-    update_taxes_from_templates(cr, 'l10n_lu.lu_2011_chart_1')

addons/l10n_lu/migrations/2.2/post-migrate_update_taxes.py

@@ -0,0 +1,7 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+from odoo import api, SUPERUSER_ID
+
+def migrate(cr, version):
+    env = api.Environment(cr, SUPERUSER_ID, {})
+    for company in env['res.company'].search([('chart_template', '=', 'lu')]):
+        env['account.chart.template'].try_loading('lu', company)