Pool ulsfo for ncredir service
$ host ncredir-lb.ulsfo.wikimedia.org
ncredir-lb.ulsfo.wikimedia.org has address 198.35.26.98
ncredir-lb.ulsfo.wikimedia.org has IPv6 address 2620:0:863:ed1a::3
Bug: T242321
Change-Id: Ie20b64dc3d828da444473beb0e36e77dc2abe460