[DONTMERGE/MIG] Client-specific migration

For the client in question, we do not need to handle analytic tags,
so this migration can be very straightforward.

stock_analytic/migrations/17.0.0.0.0/post-migration.py

@@ -0,0 +1,29 @@
+import logging
+
+from odoo.tools import SQL, table_exists
+
+_logger = logging.getLogger(__name__)
+
+def migrate(cr, installed_version):
+    _logger.info("Migrating stock analytic data...")
+    need_tag_migration = (
+        table_exists(cr, "account_analytic_tag_stock_move_rel")
+        and cr.execute(
+            SQL(
+                """
+                SELECT COUNT(*)
+                FROM account_analytic_tag_stock_move_rel
+                """,
+            ),
+        )
+        and cr.fetchall()[0][0] == 0
+    )
+    assert not need_tag_migration, "analytic tag migration not implemented"
+    cr.execute("""
+        UPDATE stock_move
+        SET analytic_distribution = ('{"' || analytic_account_id || '": 100' || '}')::jsonb
+    """)
+    cr.execute("""
+        UPDATE stock_move_line
+        SET analytic_distribution = ('{"' || analytic_account_id || '": 100' || '}')::jsonb
+    """)