[Enhancement]: Add `AWS_ROLE_SESSION_NAME` Environment Variable Option to `assume_role` block for `session_name` argument

[zisom-hc]

Description

When the AWS SDK permits it, please add the ability for users of Terraform and the AWS provider to be able to use a AWS_ROLE_SESSION_NAME environment variable to supply a Session Name instead of having to use the session_name argument in assume_role blocks that are within aws provider blocks.

Per the AWS docs, they would need to add the ability of configuring this environment variable first within the SDK for Terraform to take advantage of, but i'm still creating this FR so that a count can be collected for the amount of other folks that would desire this to be made available.

Affected Resource(s) and/or Data Source(s)

• the assume_role block within the aws provider block

Potential Terraform Configuration

Configuring an `AWS_ROLE_SESSION_NAME` environment variable within the run environment of Terraform.

References

AWS provider doc:

Would you like to implement a fix?

None

[github-actions[bot]]

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