Make parameterized test names deterministic
Make parameterized test names deterministic

chainer/chainer,wkentaro/chainer,wkentaro/chainer,niboshi/chainer,niboshi/chainer,wkentaro/chainer,hvy/chainer,niboshi/chainer,niboshi/chainer,chainer/chainer,chainer/chainer,wkentaro/chainer,hvy/chainer,chainer/chainer,hvy/chainer,hvy/chainer,pfnet/chainer