Upgrade to go 1.20.3 (#579)

* Reuse `gardener.cloud` annotations in code

* Upgrade to go 1.20.3

.ci/pipeline_definitions

@@ -24,13 +24,13 @@ etcd-druid:
                 build: ~
     steps:
       check:
-        image: 'golang:1.20.1'
+        image: 'golang:1.20.3'
       test:
-        image: 'golang:1.20.1'
+        image: 'golang:1.20.3'
       test_integration:
-        image: 'golang:1.20.1'
+        image: 'golang:1.20.3'
       build:
-        image: 'golang:1.20.1'
+        image: 'golang:1.20.3'
         output_dir: 'binary'
 
   jobs:

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM golang:1.20.1 as builder
+FROM golang:1.20.3 as builder
 WORKDIR /go/src/github.com/gardener/etcd-druid
 COPY . .
 

pkg/component/etcd/poddisruptionbudget/values.go

@@ -17,11 +17,9 @@ package poddisruptionbudget
 import "k8s.io/apimachinery/pkg/types"
 
 const (
-	ownedByAnnotationKey   = "gardener.cloud/owned-by"
-	ownerTypeAnnotationKey = "gardener.cloud/owner-type"
-	instanceKey            = "instance"
-	nameKey                = "name"
-	appKey                 = "app"
+	instanceKey = "instance"
+	nameKey     = "name"
+	appKey      = "app"
 )
 
 // Values contains the values necessary for creating PodDisruptionBudget.

pkg/component/etcd/poddisruptionbudget/valueshelper.go

@@ -18,6 +18,7 @@ import (
 	"fmt"
 
 	druidv1alpha1 "github.com/gardener/etcd-druid/api/v1alpha1"
+	"github.com/gardener/etcd-druid/pkg/common"
 )
 
 // GenerateValues generates `poddisruptionbudget.Values` for the lease component with the given parameters.
@@ -33,8 +34,8 @@ func GenerateValues(etcd *druidv1alpha1.Etcd) Values {
 	}
 
 	annotations := map[string]string{
-		ownedByAnnotationKey:   fmt.Sprintf("%s/%s", etcd.Namespace, etcd.Name),
-		ownerTypeAnnotationKey: "etcd",
+		common.GardenerOwnedBy:   fmt.Sprintf("%s/%s", etcd.Namespace, etcd.Name),
+		common.GardenerOwnerType: "etcd",
 	}
 
 	return Values{

test/utils/etcdcopybackupstask.go

@@ -19,6 +19,7 @@ import (
 	"time"
 
 	druidv1alpha1 "github.com/gardener/etcd-druid/api/v1alpha1"
+	"github.com/gardener/etcd-druid/pkg/common"
 	batchv1 "k8s.io/api/batch/v1"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -115,7 +116,7 @@ func CreateEtcdCopyBackupsJob(taskName, namespace string) *batchv1.Job {
 
 func createJobAnnotations(taskName, namespace string) map[string]string {
 	annotations := make(map[string]string, 2)
-	annotations["gardener.cloud/owned-by"] = fmt.Sprintf("%s/%s", namespace, taskName)
-	annotations["gardener.cloud/owner-type"] = "etcdcopybackupstask"
+	annotations[common.GardenerOwnedBy] = fmt.Sprintf("%s/%s", namespace, taskName)
+	annotations[common.GardenerOwnerType] = "etcdcopybackupstask"
 	return annotations
 }