add tasks for partner creation, modification and deletion

gso/services/subscriptions.py

@@ -42,7 +42,7 @@ def get_subscriptions(
     :param SubscriptionLifecycle lifecycles: The lifecycles that the products must be in.
     :param list[str] includes: List of fields to be included in the returned Subscription objects.
     :param list[str] excludes: List of fields to be excluded from the returned Subscription objects.
-    :param UUIDstr partner_id: The partner_id of subscriptions.
+    :param UUIDstr partner_id: The customer id of subscriptions.
 
     :return: A list of Subscription objects that match the query.
     :rtype: list[Subscription]