Enable autoresume for all Slurm examples

[sean-smith]

We should add the following snippet to all Slurm examples so that if it's a hyperpod cluster it'll automatically add the --auto-resume=1 flag. This needs to be tested for all examples, see #231 for an example.

AUTO_RESUME=""
if [ -d "/opt/sagemaker_cluster" ]; then
    echo "Detected Hyperpod cluster.. enabling --auto-resume=1" 
    AUTO_RESUME="--auto-resume=1"
fi

srun ${AUTO_RESUME}