fix: Function params involve heavy amount of copying (#622)

config/config.go

@@ -276,8 +276,8 @@ type SectionGRPC struct {
 }
 
 // LoadConf load config from file and read in environment variables that match
-func LoadConf(confPath ...string) (ConfYaml, error) {
-	var conf ConfYaml
+func LoadConf(confPath ...string) (*ConfYaml, error) {
+	conf := &ConfYaml{}
 
 	viper.SetConfigType("yaml")
 	viper.AutomaticEnv()         // read in environment variables that match

config/config_test.go

@@ -19,8 +19,8 @@ func TestMissingFile(t *testing.T) {
 
 type ConfigTestSuite struct {
 	suite.Suite
-	ConfGorushDefault ConfYaml
-	ConfGorush        ConfYaml
+	ConfGorushDefault *ConfYaml
+	ConfGorush        *ConfYaml
 }
 
 func (suite *ConfigTestSuite) SetupTest() {