BoostFramework: Adding config for disable packing params & scroll fix

Adding config variable for disable packing, this will provide the
flexibility to enable and disable packing on different targets.
Fixing bug in launch boost while calling back to back perflock
acquire using same Boostframework object.
Fixed bug in scroll duration during scroll perflocks.

Change-Id: Id42a6e350dfd852a43ec35ec3afef9b298707057