Add helpers to set libinfo without panic (#2724)

* add helpers to set library name and library info without risk of panic if we try to set both

* refactor code to use helpers

* add example

* refactor tests

* fix testable example

* simplify example

* rename exampl

* fix ring.go

* update example

---------

Co-authored-by: ofekshenawa <104765379+ofekshenawa@users.noreply.github.com>

example_test.go

@@ -154,7 +154,7 @@ func ExampleClient() {
 	// missing_key does not exist
 }
 
-func ExampleConn() {
+func ExampleConn_name() {
 	conn := rdb.Conn()
 
 	err := conn.ClientSetName(ctx, "foobar").Err()
@@ -175,6 +175,28 @@ func ExampleConn() {
 	// Output: foobar
 }
 
+func ExampleConn_client_setInfo_libraryVersion() {
+	conn := rdb.Conn()
+
+	err := conn.ClientSetInfo(ctx, redis.WithLibraryVersion("1.2.3")).Err()
+	if err != nil {
+		panic(err)
+	}
+
+	// Open other connections.
+	for i := 0; i < 10; i++ {
+		go rdb.Ping(ctx)
+	}
+
+	s, err := conn.ClientInfo(ctx).Result()
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println(s.LibVer)
+	// Output: 1.2.3
+}
+
 func ExampleClient_Set() {
 	// Last argument is expiration. Zero means the key has no
 	// expiration time.