Add task manager rescheduling hooks, de-duplication, lifecycle tests

awx/api/views/__init__.py

@@ -87,7 +87,6 @@ from awx.api.renderers import * # noqa
 from awx.api.serializers import * # noqa
 from awx.api.metadata import RoleMetadata, JobTypeMetadata
 from awx.main.constants import ACTIVE_STATES
-from awx.main.scheduler.tasks import run_job_complete
 from awx.api.views.mixin import (
     ActivityStreamEnforcementMixin,
     SystemTrackingEnforcementMixin,
@@ -3262,8 +3261,7 @@ class WorkflowJobCancel(WorkflowsEnforcementMixin, RetrieveAPIView):
         obj = self.get_object()
         if obj.can_cancel:
             obj.cancel()
-            #TODO: Figure out whether an immediate schedule is needed.
-            run_job_complete.delay(obj.id)
+            schedule_task_manager()
             return Response(status=status.HTTP_202_ACCEPTED)
         else:
             return self.http_method_not_allowed(request, *args, **kwargs)