Make sure we notify vars_update_on_launch from job details

awx/main/models/jobs.py

@@ -230,6 +230,10 @@ class Job(UnifiedJob, JobOptions):
             h = hmac.new(settings.SECRET_KEY, self.created.isoformat())
             return '%d-%s' % (self.pk, h.hexdigest())
 
+    @property
+    def vars_prompt_on_launch(self):
+        return self.job_template.vars_prompt_on_launch
+
     @property
     def passwords_needed_to_start(self):
         '''Return list of password field names needed to start the job.'''