Support for google_folder_iam_policy at team, service and environment folders

[Brett Curtis]

To ensure proper access, teams must assign IAM roles to folders based on cloud identity groups. This allows developers to view and perform console-level activities as needed.

Tasks

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1. Teams can create identity groups and tie those groups with IAM roles to a team, service, or environment folder

Manually added service account to testing sandbox for Shared VPC Admin.