solution3

type Config struct {
	DBHost     string
	DBPort     int
	DBUser     string
	DBPassword string

	K8sInCluster bool
	K8sServer    string
	K8sCrtFile   string
	K8sKeyFile   string
	K8sCAFile    string
}

type PostgreSQLConfig struct {
	apismetav1.TypeMeta   `json:",inline"`
	apismetav1.ObjectMeta `json:"metadata,omitempty"`

	customobject.PostgreSQLConfig `json:",inline"`
}

type PostgreSQLConfigList struct {
	apismetav1.TypeMeta `json:",inline"`
	apismetav1.ListMeta `json:"metadata,omitempty"`

	Items []*PostgreSQLConfig `json:"items"`
}