Add ddmrp_cron_actions_as_job

It makes calls to "cron_actions" run in queue jobs.

The jobs have an identity key with "identity_exact", meaning that only
one occurence of a job for the same buffer with the same arguments
(only_nfp) will be created at a time (e.g. when the state of a
stock.move is changed several times in the same transaction or in
a different transaction in a short timeframe).

It needs OCA/queue#274 and
OCA/queue#275

ddmrp/tests/common.py

@@ -12,6 +12,16 @@ class TestDdmrpCommon(common.SavepointCase):
     def setUpClass(cls):
         super().setUpClass()
 
+        cls.env = cls.env(
+            context=dict(
+                cls.env.context,
+                tracking_disable=True,
+                # compatibility with ddmrp_cron_actions_as_job,
+                # that would delay calls to "cron_actions" in these tests
+                test_queue_job_no_delay=True,
+            )
+        )
+
         # Models
         cls.productModel = cls.env["product.product"]
         cls.templateModel = cls.env["product.template"]