added simple cifar examples

tensorflow/cifar10/set_vars.sh

tensorflow/cifar10/submit_job_container.sh

tensorflow/cifar10/submit_job_venv.sh

tensorflow/cifar10/train_model.py

tensorflow/cifar10_distributed/execution_wrapper.sh

tensorflow/cifar10_distributed/set_vars.sh

tensorflow/cifar10_distributed/submit_job_container.sh

tensorflow/cifar10_distributed/submit_job_venv.sh

tensorflow/cifar10_distributed/train_model.py