E2E tests use repeated strings for test data where constants add no value (#97)

---------

Co-authored-by: Pasha Sviderski <me@psviderski.name>
Co-authored-by: Anton Ovchinnikov <anton@tonyo.info>

pkg/client/connector/tcp.go

@@ -3,9 +3,10 @@ package connector
 import (
 	"context"
 	"fmt"
+	"net/netip"
+
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
-	"net/netip"
 )
 
 // TCPConnector establishes a connection to the machine API through a direct TCP connection to an API endpoint.