Update worker run has_results by batches of 1000

closes #1693 (closed)

I couldn't manage to completely crash my nuc running the command to update 20.000+ worker runs but I killed it after 7 minutes while in batches the update took 7 seconds.

arkindex/process/managers.py

@@ -199,7 +199,7 @@ class WorkerRunQuerySet(QuerySet):
         queryset = list(self.annotate(new_has_results=self.has_results_expression()).only("id"))
         for run in queryset:
             run.has_results = run.new_has_results
-        self.bulk_update(queryset, ["has_results"])
+        self.bulk_update(queryset, ["has_results"], 1000)
 
     def has_results_expression(self):
         return reduce(operator.or_, [