Changed file name of dataset in dnn_benchmarks

...nchmarks/benchmarks/alexnet2_cifar10/alexnet2_cifar10.cpp

...ks/benchmarks/alexnet2_cifar10/alexnet2_cifar10_cudnn.cpp

...benchmarks/benchmarks/alexnet_cifar10/alexnet_cifar10.cpp

...arks/benchmarks/alexnet_cifar10/alexnet_cifar10_cudnn.cpp

...nchmarks/benchmarks/alexnet_imagenet/alexnet_imagenet.cpp

...ks/benchmarks/alexnet_imagenet/alexnet_imagenet_cudnn.cpp

...est/dnn_benchmarks/benchmarks/lenet_mnist/lenet_mnist.cpp

...n_benchmarks/benchmarks/lenet_mnist/lenet_mnist_cudnn.cpp

hpvm/test/dnn_benchmarks/benchmarks/mobilenet/mobilenet.cpp

...t/dnn_benchmarks/benchmarks/mobilenet/mobilenet_cudnn.cpp

...nchmarks/benchmarks/resnet18_cifar10/resnet18_cifar10.cpp

...ks/benchmarks/resnet18_cifar10/resnet18_cifar10_cudnn.cpp

...hmarks/benchmarks/resnet50_imagenet/resnet50_imagenet.cpp

.../benchmarks/resnet50_imagenet/resnet50_imagenet_cudnn.cpp

...dnn_benchmarks/benchmarks/vgg16_cifar10/vgg16_cifar10.cpp

...nchmarks/benchmarks/vgg16_cifar10/vgg16_cifar10_cudnn.cpp

...n_benchmarks/benchmarks/vgg16_cifar100/vgg16_cifar100.cpp

...hmarks/benchmarks/vgg16_cifar100/vgg16_cifar100_cudnn.cpp

...n_benchmarks/benchmarks/vgg16_imagenet/vgg16_imagenet.cpp

...hmarks/benchmarks/vgg16_imagenet/vgg16_imagenet_cudnn.cpp