[tz] Different tzdata-latest.tar.gz files returned from different servers

[David Kyes]

Hello, 

It appears cache1.lax.icann.org is still returning the previous 2015f tzdata file when requesting the tzdata-latest.tar.gz from www.iana.org.

I have been receiving 2 different responses for the tzdata-latest.tar.gz depending on which icann.org server handles the request. cache1.lax.icann.org is responding with the 2015f tzdata file and "cache1.lax.icann.org" is returning the 2015g. Below are network traces which show the difference in X-Cache-Host , Content-Length and Last-Modified response headers. Opening the Makefile confirms the different versions. 

Thank you,
David Kyes

cache1.lax.icann.org
===========================
GET https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz HTTP/1.1
User-Agent: Fiddler
Host: www.iana.org

HTTP/1.1 200 OK
Last-Modified: Tue, 11 Aug 2015 02:02:03 GMT
Vary: Accept-Encoding
content-type: application/x-gzip
Cache-Control: public, max-age=3600
Content-Length: 298815
Accept-Ranges: bytes
Date: Sat, 10 Oct 2015 01:32:42 GMT
Connection: keep-alive
Server: Apache
X-Cache-Host: cache1.lax.icann.org
X-Cache-Hits: 51399
==========================
Makefile
VERSION=	2015f

==========================
==========================

cache2.lax.icann.org
==========================
GET https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz HTTP/1.1
User-Agent: Fiddler
Host: www.iana.org

HTTP/1.1 200 OK
Last-Modified: Thu, 01 Oct 2015 15:09:07 GMT
Vary: Accept-Encoding
content-type: application/x-gzip
content-encoding: identity
Cache-Control: public, max-age=3600
Content-Length: 300363
Accept-Ranges: bytes
Date: Sat, 10 Oct 2015 00:09:21 GMT
Connection: keep-alive
Server: Apache
X-Cache-Host: cache2.lax.icann.org
X-Cache-Hits: 72168
==========================
Makefile
VERSION=	2015g