Flip ed1a::0 and ed1a::1 in protoproxy

::1 is the current correct primary text-lb ipv6, but it's
being served alongside the outdated v4 and vice-versa.

This gets things to where one protoproxy entry contains
the correct current v4+v6 together.

Change-Id: Ie2898197fc2a37e6db0160a0562473904784a901