tests: PooledFrameAllocator, fill VideoFrame's crop
tests: PooledFrameAllocator, fill VideoFrame's crop

libva before 1.6.0 have bug, if we do not set the dest crop, the scaled
surface will wrong.

YuJiankang/libyami,chivakker/libyami,halleyzhao/libyami,andyLiuChina/libyami,yizhouwei/libyami,clearlylin/libyami,lizhong1008/libyami,stripes416/libyami,dspmeng/libyami,seanvk/libyami,uartie/libyami,seanvk/libyami,01org/libyami,clearlylin/libyami,lizhong1008/libyami,andyLiuChina/libyami,clearlylin/libyami,01org/libyami,zhaobob/libyami,stripes416/libyami,YuJiankang/libyami,halleyzhao/libyami,halleyzhao/libyami,zhaobob/libyami,BtbN/libyami,chivakker/libyami,BtbN/libyami,zhaobob/libyami,dspmeng/libyami,stripes416/libyami,andyLiuChina/libyami,01org/libyami,yizhouwei/libyami,uartie/libyami,BtbN/libyami,dspmeng/libyami,BtbN/libyami,andyLiuChina/libyami,lizhong1008/libyami,halleyzhao/libyami,chivakker/libyami,seanvk/libyami,yizhouwei/libyami,YuJiankang/libyami,uartie/libyami