test(e2e): Add module for iam user with credential rotation support

[moduli]

This PR updates an enos module that creates an IAM user to add support for credential rotation. The module was updated with the following

• a new variable to the module to decide whether or not credential rotation support is needed (default: false)
• if credential rotation support is enabled, the IAM user needs the force_destroy option set to true in order for terraform to successfully clean up afterwards (otherwise you'll get an error like Cannot delete entity, must delete access keys first. since new access keys were created)
• if credential rotation is enabled, another policy is added to the user that allows the user to rotate its access keys

There will be a follow-up PR in boundary-enterprise to add the associated tests.
There will also be follow-up work to add similar tests using MinIO