Error message change for validation

[Rangababu-R]

Sample code for the error messages by adding path to it

func (obj *prefixConfig) FromJson(value string) error {
	opts := protojson.UnmarshalOptions{
		AllowPartial:   true,
		DiscardUnknown: false,
	}
	uError := opts.Unmarshal([]byte(value), obj.Msg())
	if uError != nil {
		return fmt.Errorf("unmarshal error %s", strings.Replace(
			uError.Error(), "\u00a0", " ", -1)[7:])
	}
	err := obj.validateFromText("prefixConfig.FromJson()")
	if err != nil {
		return err
	}
	return nil
}

func (obj *prefixConfig) validateFromText(path string) error {
	obj.validateObj(true, path)
	return validationResult()
}

func (obj *prefixConfig) Validate() error {
	obj.validateObj(false, "prefixConfig.Validate()")
	return validationResult()
}

func (obj *prefixConfig) validateObj(set_default bool, path string) {
	if set_default {
		obj.setDefault()
	}

	// RequiredObject is required
	if obj.obj.RequiredObject == nil {
		validation = append(
			validation,
			fmt.Sprintf("PrefixConfig.required_object is a required field from path %s", path))
	}

	if obj.obj.RequiredObject != nil {
		obj.RequiredObject().validateObj(
			set_default, fmt.Sprintf("%s.RequiredObject", path))
	}

[Rangababu-R]

addressed: #221

[Rangababu-R]

merged into #281