Update SSP metadata role constraints (#676)

[DimitriZhurkin]

Committer Notes

Removed the system-poc-other constraint (#676).

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[aj-stein-gsa]

Looks good. Thanks for working through the merge conflicts with me.

[aj-stein-gsa]

Since I broke the tests with my rebase and feedback, I will assign myself with @DimitriZhurkin to fix it. 😆

[aj-stein-gsa]

Passed tests once I head a clear mind, focus, and realized roles are in metadata, not inside the controls. And that, children, is a teachable moment in why rebases need to be done with a certain amount of focus. 🚢