Clean up server/node_test.go
Clean up server/node_test.go

Increase timeouts, which makes TestBootstrapNewStore less flaky.

Correctly detect equal network addresses, fixing apparently-harmless log
messages about connecting to `127.0.0.1:0`.

Use the correct `TxnCoordSender`/`DistSender` stack to silence errors
logged by the split queue.

Fixes #3926.

arjun4084346/cockroach,veteranlu/cockroach,arjun4084346/cockroach,marcuswestin/cockroach,vaibhavarora/cockroach,glycerine/cockroach,sunya123/cockroach,nieyy/cockroach,cockroachdb/cockroach,paperstreet/cockroach,il9ue/cockroach,cuongdo/cockroach,paperstreet/cockroach,marcuswestin/cockroach,cockroachdb/cockroach,glycerine/cockroach,maxlang/cockroach,cockroachdb/cockroach,bg451/cockroach,bg451/cockroach,vivekmenezes/cockroach,arjun4084346/cockroach,sunya123/cockroach,nieyy/cockroach,petermattis/cockroach,marcuswestin/cockroach,vaibhavarora/cockroach,sunya123/cockroach,bg451/cockroach,veteranlu/cockroach,arjun4084346/cockroach,glycerine/cockroach,vaibhavarora/cockroach,cockroachdb/cockroach,arjun4084346/cockroach,paperstreet/cockroach,cuongdo/cockroach,veteranlu/cockroach,sunya123/cockroach,cockroachdb/cockroach,nieyy/cockroach,maxlang/cockroach,vaibhavarora/cockroach,cuongdo/cockroach,petermattis/cockroach,vivekmenezes/cockroach,veteranlu/cockroach,arjun4084346/cockroach,marcuswestin/cockroach,paperstreet/cockroach,maxlang/cockroach,marcuswestin/cockroach,petermattis/cockroach,sunya123/cockroach,cuongdo/cockroach,vivekmenezes/cockroach,marcuswestin/cockroach,il9ue/cockroach,petermattis/cockroach,maxlang/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,vivekmenezes/cockroach,cuongdo/cockroach,cockroachdb/cockroach,il9ue/cockroach,nieyy/cockroach,vivekmenezes/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,il9ue/cockroach,paperstreet/cockroach,veteranlu/cockroach,glycerine/cockroach,glycerine/cockroach,sunya123/cockroach,glycerine/cockroach,glycerine/cockroach,marcuswestin/cockroach,paperstreet/cockroach,bg451/cockroach,paperstreet/cockroach,maxlang/cockroach,petermattis/cockroach,nieyy/cockroach,maxlang/cockroach,veteranlu/cockroach,il9ue/cockroach,nieyy/cockroach,arjun4084346/cockroach,bg451/cockroach,petermattis/cockroach,petermattis/cockroach,veteranlu/cockroach,bg451/cockroach,petermattis/cockroach,glycerine/cockroach,nieyy/cockroach,vivekmenezes/cockroach,vaibhavarora/cockroach,cuongdo/cockroach,paperstreet/cockroach,nieyy/cockroach,vivekmenezes/cockroach,vaibhavarora/cockroach,bg451/cockroach,cockroachdb/cockroach,sunya123/cockroach,sunya123/cockroach,maxlang/cockroach,maxlang/cockroach,marcuswestin/cockroach,cuongdo/cockroach,il9ue/cockroach,il9ue/cockroach,vaibhavarora/cockroach,cuongdo/cockroach,il9ue/cockroach,arjun4084346/cockroach