feat(redis): support confiuring username (#1752)

替换Golang Redis依赖: redigo的版本至当前最新版1.8.9
（v2.0.0被标记为已撤回，且长期未更新）

Redis 6 及以上版本均可配置为使用username+password认证的ACL,故作此变更。

pkg/cache/driver.go

@@ -21,6 +21,7 @@ func Init() {
 			10,
 			conf.RedisConfig.Network,
 			conf.RedisConfig.Server,
+			conf.RedisConfig.User,
 			conf.RedisConfig.Password,
 			conf.RedisConfig.DB,
 		)

pkg/cache/redis.go

@@ -44,7 +44,7 @@ func deserializer(value []byte) (interface{}, error) {
 }
 
 // NewRedisStore 创建新的redis存储
-func NewRedisStore(size int, network, address, password, database string) *RedisStore {
+func NewRedisStore(size int, network, address, user, password, database string) *RedisStore {
 	return &RedisStore{
 		pool: &redis.Pool{
 			MaxIdle:     size,
@@ -63,6 +63,7 @@ func NewRedisStore(size int, network, address, password, database string) *Redis
 					network,
 					address,
 					redis.DialDatabase(db),
+					redis.DialUsername(user),
 					redis.DialPassword(password),
 				)
 				if err != nil {

pkg/cache/redis_test.go

@@ -13,7 +13,7 @@ import (
 func TestNewRedisStore(t *testing.T) {
 	asserts := assert.New(t)
 
-	store := NewRedisStore(10, "tcp", "", "", "0")
+	store := NewRedisStore(10, "tcp", "", "", "", "0")
 	asserts.NotNil(store)
 
 	asserts.Panics(func() {

pkg/conf/conf.go

@@ -53,6 +53,7 @@ type slave struct {
 type redis struct {
 	Network  string
 	Server   string
+	User	 string
 	Password string
 	DB       string
 }