Show Usage Quotas regardless of namespace subscription

Merged Alessio Caiazza requested to merge ac-usage-quotas-global-features into master

What does this MR do?

Promote usage_quotas to a global feature, it will allow selling additional CI minutes regardless of namespace subscription.

Does this MR meet the acceptance criteria?

Conformity

Closes #12142 (closed)

Edited by Mayra Cabrera