use s3 website bucket name so index documents work in subdirs

The custom_origin_config is required because terraform will
insist that the bucket name is incorrect as it doesn't follow
the irlpodcast.s3.amazonaws.com format.

requires terraform 0.9.8

see also:
hashicorp/terraform#10572
hashicorp/terraform#13627

apps/irlpodcast/tf/irlpodcast.tf

@@ -74,8 +74,15 @@ EOF
 
 resource "aws_cloudfront_distribution" "s3_distribution" {
  origin {
- domain_name = "${aws_s3_bucket.irlpodcast.bucket_domain_name}"
+ domain_name = "irlpodcast.s3-website-us-west-2.amazonaws.com"
  origin_id = "IRLPodcast"
+ custom_origin_config {
+ origin_protocol_policy = "https-only"
+ http_port = "80"
+ https_port = "443"
+ origin_ssl_protocols = ["TLSv1"]
+ #origin_read_timeout = 4
+ }
  }
 
  enabled = true