Update Makefile for Labs instances migrated to eqiad

It's now ee-flow.eqiad.wmflabs; `make ee-flow` works.
The other two servers are coming.
ee-flow-big isn't big, it'll be ee-flow-extra2

Change-Id: I78d10288cc9b74b2bff2f129748b07a1d02151c1
Merge "Update Makefile for Labs instances migrated to eqiad"