Returns the Amazon Resource Name (ARN) for the instance profile. For example: {"Fn::GetAtt" : ["MyProfile", "Arn"] } This returns a value such as arn:aws:iam::1234567890:instance-profile/MyProfile-ASDNSDLKJ .
The name of the role to associate with the instance profile. Only one role can be assigned to an EC2 instance at a time, and all applications on the instance share the same role and permissions.