[#607] network: Implement WriteToNodeInfo method on Address

Implement `Address.WriteToNodeInfo` method which sets address of `NodeInfo`
structure. Use it in storage node application.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/network/address_test.go

@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	"github.com/multiformats/go-multiaddr"
+	"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
 	"github.com/stretchr/testify/require"
 )
 
@@ -63,3 +64,18 @@ func buildMultiaddr(s string, t *testing.T) multiaddr.Multiaddr {
 	require.NoError(t, err)
 	return ma
 }
+
+func TestAddress_WriteToNodeInfo(t *testing.T) {
+	a := "127.0.0.1:8080"
+
+	addr, err := AddressFromString(a)
+	require.NoError(t, err)
+
+	var ni netmap.NodeInfo
+
+	addr.WriteToNodeInfo(&ni)
+
+	restored, err := AddressFromString(ni.Address())
+	require.NoError(t, err)
+	require.True(t, restored.Equal(*addr))
+}