HIVE-23756: Add foreign keys to jdo file

[scarlin-cloudera]

What changes were proposed in this pull request?

Why are the changes needed?

Does this PR introduce any user-facing change?

How was this patch tested?

[kgyrtkirk]

Great idea! Thank you for working on this!

I'm not sure if the jira reference is correct; you may even create a new ticket - and reference the other that this will solve that one too

[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the dev@hive.apache.org list if the patch is in need of reviews.

[belugabehr]

@kgyrtkirk This PR was approved and then went stale. Do you want to take another pass at it? Thanks.

[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the dev@hive.apache.org list if the patch is in need of reviews.