[test] TestReshape: check that shapes actually change
[test] TestReshape: check that shapes actually change

Check that output spatial shape varies with input shape while the output
num matches the input num.

CZCV/s-dilation-caffe,wangg12/caffe,gnina/gnina,gnina/gnina,tackgeun/caffe,CZCV/s-dilation-caffe,tackgeun/caffe,gnina/gnina,wangg12/caffe,gnina/gnina,tackgeun/caffe,wangg12/caffe,gnina/gnina,CZCV/s-dilation-caffe,CZCV/s-dilation-caffe,tackgeun/caffe,gnina/gnina,wangg12/caffe