[ ] Search config needs to know the name of the cluster to connect to. Currently it only has the local wiki config and not the config of the wiki being searched
[ ] ~~Connection class needs to report the name of the cluster it's connected to: Connection::getClusterName~~
[ ] ~~Connection might need different methods to get read / write connections?~~
[ ] ~~Which cluster should link counting go to? Might not matter~~
[ ] New LVS endpoints: write lvs for eqiad/codfw, and a top level auto-dicovery endpoint
[ ] ~~APIFeatureUsage needs to connect to the appropriate cluster: Always the large cluster.~~
[ ] CirrusSearch needs some config that enables cross-cluster prefixing. When enabled all searches (local, sistersearch, second try, etc) must use be prefixed with their cluster name. This should be doable by having either function params or separate functions to get read and write index names.