[buildbot committed 1/3] Update the URL to the new instance

[Siddhesh Poyarekar]

On Thursday 20 July 2017 08:31 PM, Siddhesh Poyarekar wrote:
>> By the way, who can update this URL? http://www.gnu.org/software/libc/waterfall/
> 
> I have access, so I'll do it tomorrow.

The tomorrow finally arrived; I've updated it now :)

Siddhesh