Add new codfw allocations, core router loopbacks & transfer nets

As 208.80.152.0/24 is still in use for another while and some subnets
are in the way, let's start with the completely empty 208.80.153.0/24.
We could leave pim-rp.wikimedia.org and loopbacks in 208.80.152.0/24,
but since moving it is easy enough, perhaps we should remove the legacy.

Change-Id: Idc452985d256288cf1c90ded8118361698deab4d
Merge "Add new codfw allocations, core router loopbacks & transfer nets"