Add FSxZ support for TF modules for SMHP Slurm

[amanshanbhag]

Title says it all :)

http://github.com/aws-samples/awsome-distributed-training/tree/main/1.architectures/5.sagemaker-hyperpod/terraform-modules

[nghtm]

status?

[nghtm]

@allela-roy + @aravneelaws - can we please work on a PR to add this to terraform stacks

[allela-roy]

ACK, working on it.

[allela-roy]

#890 ready for review