Address linter issues

Signed-off-by: Arrobo, Gabriel <[email protected]>

pkg/fake_bess/fake_bess.go

@@ -26,7 +26,7 @@ func NewFakeBESS() *FakeBESS {
 
 // Run starts and runs the BESS gRPC server on the given address. Blocking until Stop is called.
 func (b *FakeBESS) Run(address string) error {
-	listener, err := net.Listen("tcp", fmt.Sprintf(address))
+	listener, err := net.Listen("tcp", fmt.Sprintln(address))
 	if err != nil {
 		return err
 	}