[ADD] currency_rate_update migration script

currency_rate_update/migrations/9.0.1.1/post-migration.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Copyright 2017 Tecnativa - Vicent Cubells
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+from openupgradelib import openupgrade
+
+
+def migrate_currency_rate_update(env):
+    """ Update field value because service selection field has changed """
+    query = """
+        UPDATE currency_rate_update_service
+        SET {0}=replace({0}, '_getter', '')
+        WHERE {0} like '%_getter'
+        """
+    env.cr.execute(query.format('service'))
+
+
+@openupgrade.migrate(use_env=True)
+def migrate(env, version):
+    migrate_currency_rate_update(env)