Kubernetes refactor (#2794)

Kubernetes backend refactoring and tests

---------
Co-authored-by: 6543 <6543@obermui.de>

pipeline/backend/kubernetes/utils.go

@@ -78,3 +78,15 @@ func getClientInsideOfCluster() (kubernetes.Interface, error) {
 
 	return kubernetes.NewForConfig(config)
 }
+
+func newBool(val bool) *bool {
+	ptr := new(bool)
+	*ptr = val
+	return ptr
+}
+
+func newInt64(val int64) *int64 {
+	ptr := new(int64)
+	*ptr = val
+	return ptr
+}