Move cloud metadata packages and kubernetes resources marshaling to internal

Decouples cloud provider metadata packages from kubernetes related code

Signed-off-by: Malte Poll <mp@edgeless.systems>

internal/cloud/azure/cloudnodemanager.go

@@ -0,0 +1,31 @@
+package azure
+
+import (
+	"github.com/edgelesssys/constellation/internal/versions"
+)
+
+// CloudNodeManager holds the Azure cloud-node-manager configuration.
+// reference: https://raw.githubusercontent.com/kubernetes-sigs/cloud-provider-azure/master/examples/out-of-tree/cloud-node-manager.yaml .
+type CloudNodeManager struct{}
+
+// Image returns the container image used to provide cloud-node-manager for the cloud-provider.
+func (c *CloudNodeManager) Image(k8sVersion versions.ValidK8sVersion) (string, error) {
+	return versions.VersionConfigs[k8sVersion].CloudNodeManagerImageAzure, nil
+}
+
+// Path returns the path used by cloud-node-manager executable within the container image.
+func (c *CloudNodeManager) Path() string {
+	return "cloud-node-manager"
+}
+
+// ExtraArgs returns a list of arguments to append to the cloud-node-manager command.
+func (c *CloudNodeManager) ExtraArgs() []string {
+	return []string{
+		"--wait-routes=true",
+	}
+}
+
+// Supported is used to determine if cloud node manager is implemented for this cloud provider.
+func (c *CloudNodeManager) Supported() bool {
+	return true
+}