ecs.tf iam_instance_profile

[munhitsu]

copy paste issue in:
https://github.com/Capgemini/terraform-amazon-ecs/blob/master/ecs.tf#L16-L18

"""
iam_instance_profile = "${aws_iam_instance_profile.ecs.id}"
security_groups = ["${aws_security_group.ecs.id}"]
iam_instance_profile = "${aws_iam_instance_profile.ecs.name}"
"""