reduce default preservative up_threshold to 95 for a smoother out of the box experience

Change-Id: Ie89968d28d1bee74db673c188e35dc30061aa76a
add touch_boost to preservative governor

Change-Id: I572f0cb4605eb0d04b317b9f48f70403cdc88c10
add plug_boost to preservative governor

Change-Id: Id2c882df7e97667af49c35921830cc793af8fea1