* Add support for iam:DetachRolePolicy and iam:DeleteRolePolicy. * Raise proper exceptions for iam:DetachRolePolicy and iam:DeleteRolePolicy when the policy doesn't exist.
* Add support for iam:DetachRolePolicy and iam:DeleteRolePolicy. * Raise proper exceptions for iam:DetachRolePolicy and iam:DeleteRolePolicy when the policy doesn't exist.