UnresolvedAddress.string_field -> address_field

The field name of this structure was changed by cockroachdb#1976, but it has since been
decided that "address" is a more accurate name than "string".

rpc/client.go

@@ -157,7 +157,7 @@ func (c *Client) internalConn() *internalConn {
 
 // connect attempts a single connection attempt. On success, updates `c.conn`.
 func (c *Client) connect() error {
-	conn, err := TLSDialHTTP(c.addr.NetworkField, c.addr.StringField, c.tlsConfig)
+	conn, err := TLSDialHTTP(c.addr.NetworkField, c.addr.AddressField, c.tlsConfig)
 	if err != nil {
 		return err
 	}

server/node_test.go

@@ -216,12 +216,12 @@ func TestNodeJoin(t *testing.T) {
 	if err := util.IsTrueWithin(func() bool {
 		if val, err := node1.ctx.Gossip.GetInfo(node2Key); err != nil {
 			return false
-		} else if addr2 := val.(*proto.NodeDescriptor).Address.StringField; addr2 != server2.Addr().String() {
+		} else if addr2 := val.(*proto.NodeDescriptor).Address.AddressField; addr2 != server2.Addr().String() {
 			t.Errorf("addr2 gossip %s doesn't match addr2 address %s", addr2, server2.Addr().String())
 		}
 		if val, err := node2.ctx.Gossip.GetInfo(node1Key); err != nil {
 			return false
-		} else if addr1 := val.(*proto.NodeDescriptor).Address.StringField; addr1 != server1.Addr().String() {
+		} else if addr1 := val.(*proto.NodeDescriptor).Address.AddressField; addr1 != server1.Addr().String() {
 			t.Errorf("addr1 gossip %s doesn't match addr1 address %s", addr1, server1.Addr().String())
 		}
 		return true

server/status_test.go

@@ -92,7 +92,7 @@ func TestStatusJson(t *testing.T) {
   "nodeID": 1,
   "address": {
     "network": "%s",
-    "string": "%s"
+    "address": "%s"
   },
   "buildInfo": {
     "goVersion": "%s",