Get config from environment variables;

ignore pg major version change;
get rid of resources package;

pkg/util/config/config.go

@@ -0,0 +1,51 @@
+package config
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/kelseyhightower/envconfig"
+)
+
+type TPR struct {
+	ReadyWaitInterval time.Duration `split_words:"true",default:"3s"`
+	ReadyWaitTimeout  time.Duration `split_words:"true",default:"30s"`
+	ResyncPeriod      time.Duration `split_words:"true",default:"5m"`
+}
+
+type Resources struct {
+	ResyncPeriodPod        time.Duration `split_words:"true",default:"5m"`
+	ResourceCheckInterval  time.Duration `split_words:"true",default:"3s"`
+	ResourceCheckTimeout   time.Duration `split_words:"true",default:"10m"`
+	PodLabelWaitTimeout    time.Duration `split_words:"true",default:"10m"`
+	PodDeletionWaitTimeout time.Duration `split_words:"true",default:"10m"`
+}
+
+type Auth struct {
+	PamRoleName          string `split_words:"true",default:"zalandos"`
+	PamConfiguration     string `split_words:"true",default:"https://info.example.com/oauth2/tokeninfo?access_token= uid realm=/employees"`
+	TeamsAPIUrl          string `envconfig:"teams_api_url",default:"https://teams.example.com/api/"`
+	OAuthTokenSecretName string `envconfig:"oauth_token_secret_name",default:"postgresql-operator"`
+	SuperUsername        string `split_words:"true",default:"postgres"`
+	ReplicationUsername  string `split_words:"true",default:"replication"`
+}
+
+type Config struct {
+	TPR
+	Resources
+	Auth
+	EtcdHost           string `split_words:"true",default:"etcd-client.default.svc.cluster.local:2379"`
+	DockerImage        string `split_words:"true",default:"registry.opensource.zalan.do/acid/spilo-9.6:1.2-p12"`
+	ServiceAccountName string `split_words:"true",default:"operator"`
+	DbHostedZone       string `split_words:"true",default:"db.example.com"`
+}
+
+func LoadFromEnv() *Config {
+	var cfg Config
+	err := envconfig.Process("PGOP", &cfg)
+	if err != nil {
+		panic(fmt.Errorf("Can't read config: %v", err))
+	}
+
+	return &cfg
+}