Apiary producer role does not check schema(key) name

[githubjianli]

Describe the bug
in here: https://github.com/ExpediaGroup/apiary-data-lake/blob/master/common.tf#L35C3-L35C30

when pass apiary_producer_iam_role to bucket policy, it only looks up the value of the variable, but when we define the producer role, we have a schema name(key) specified, that is not considered when we passing roles, which will cause all iam roles lists here will have permission to all schemas.

To Reproduce
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Expected behavior
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Logs
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