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/autoscaler_test.go

@@ -0,0 +1,81 @@
+package azure
+
+import (
+	"testing"
+
+	"github.com/edgelesssys/constellation/internal/kubernetes"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	k8s "k8s.io/api/core/v1"
+	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+func TestAutoscalerSecrets(t *testing.T) {
+	testCases := map[string]struct {
+		providerID             string
+		cloudServiceAccountURI string
+		wantSecrets            kubernetes.Secrets
+		wantErr                bool
+	}{
+		"Secrets works": {
+			providerID:             "azure:///subscriptions/subscription-id/resourceGroups/resource-group/providers/Microsoft.Compute/virtualMachineScaleSets/scaleset/virtualMachines/instance-name",
+			cloudServiceAccountURI: "serviceaccount://azure?tenant_id=tenant-id&client_id=client-id&client_secret=client-secret",
+			wantSecrets: kubernetes.Secrets{
+				&k8s.Secret{
+					TypeMeta: meta.TypeMeta{
+						Kind:       "Secret",
+						APIVersion: "v1",
+					},
+					ObjectMeta: meta.ObjectMeta{
+						Name:      "cluster-autoscaler-azure",
+						Namespace: "kube-system",
+					},
+					Data: map[string][]byte{
+						"ClientID":       []byte("client-id"),
+						"ClientSecret":   []byte("client-secret"),
+						"ResourceGroup":  []byte("resource-group"),
+						"SubscriptionID": []byte("subscription-id"),
+						"TenantID":       []byte("tenant-id"),
+						"VMType":         []byte("vmss"),
+					},
+				},
+			},
+		},
+		"invalid providerID fails": {
+			providerID: "invalid",
+			wantErr:    true,
+		},
+		"invalid cloudServiceAccountURI fails": {
+			providerID:             "azure:///subscriptions/subscription-id/resourceGroups/resource-group/providers/Microsoft.Compute/virtualMachines/instance-name",
+			cloudServiceAccountURI: "invalid",
+			wantErr:                true,
+		},
+	}
+
+	for name, tc := range testCases {
+		t.Run(name, func(t *testing.T) {
+			assert := assert.New(t)
+			require := require.New(t)
+
+			autoscaler := Autoscaler{}
+			secrets, err := autoscaler.Secrets(tc.providerID, tc.cloudServiceAccountURI)
+			if tc.wantErr {
+				assert.Error(err)
+				return
+			}
+			require.NoError(err)
+			assert.Equal(tc.wantSecrets, secrets)
+		})
+	}
+}
+
+func TestTrivialAutoscalerFunctions(t *testing.T) {
+	assert := assert.New(t)
+	autoscaler := Autoscaler{}
+
+	assert.NotEmpty(autoscaler.Name())
+	assert.Empty(autoscaler.Volumes())
+	assert.Empty(autoscaler.VolumeMounts())
+	assert.NotEmpty(autoscaler.Env())
+	assert.True(autoscaler.Supported())
+}