Change stocks spice trigger

The old one was conflicting with the internal trigger and would result in 'medium' signal when it should be 'high'.

@jagtalon @moollaza I would love to just remove the trigger here altogether since it's all done internally. Is there a way to create a spice w/o a trigger? It seems like if you leave out the triggers it doesn't make it into the generated nginx conf?

cc @russellholt