'allowPreconditions' flag on a template isnt initialized the first time a template is created using "Create from NiFi"
1. create a template in NiFi that has a TriggerFeed processor
2. In Kylo choose Templates -> -> Create FromNiFi
3. Select the template and Register it
4. Create a new feed using this template
5. The Schedule Step will not show the "Trigger Event" and allow you to Add a precondition.
This is because the code that determines the 'allowPrecondition' flag isnt set correctly the first time creating from NiFi.