platedetector: Change type of plate-width-percentage from int to float
platedetector: Change type of plate-width-percentage from int to float

Change-Id: I7b99af240b23100ed1d246b7e8e2017190eb8a20

Kurento/kms-elements,Kurento/kms-elements,TribeMedia/kms-elements,TribeMedia/kms-elements,shelsonjava/kms-elements,TribeMedia/kms-elements,shelsonjava/kms-elements,shelsonjava/kms-elements,Kurento/kms-elements