GlueOperator: iam_role_arn as a parameter

[pachu]

Description

Hi,
There is mandatory parameter iam_role_name parameter for GlueJobOperator/GlueJobHook.
It adds additional step of translating it to the arn, which needs connectivity to the global iam AWS endpoint (no privatelink availabale).
For private setups it needs opening connectivity + proxy configuration to make it working.
It would be great to have also possibility to just pass directly iam_role_arn and avoid this additional step.

Use case/motivation

Role assignation does not need external connectivity, possibility of adding arn instead of the name.

Related issues

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[boring-cyborg]

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[erdos2n]

@eladkal , can I try and take this?

[phanikumv]

Assigned it to you @erdos2n