[MIG]l10n_fr_hr_holidays:backport from v17 to 16

l10n_fr_hr_holidays/models/res_config_settings.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import fields, models
+
+class ResConfigSettings(models.TransientModel):
+    _inherit = 'res.config.settings'
+
+    l10n_fr_reference_leave_type = fields.Many2one(
+        'hr.leave.type',
+        related='company_id.l10n_fr_reference_leave_type',
+        readonly=False)
+
+    # backport from V170
+    company_country_code = fields.Char(related="company_id.country_id.code", string="Company Country Code", readonly=True)
+