Move /cli/command/stack/kubernetes/api to /kubernetes

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

kubernetes/labels/labels_test.go

@@ -0,0 +1,22 @@
+package labels
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestForService(t *testing.T) {
+	labels := ForService("stack", "service")
+
+	assert.Len(t, labels, 3)
+	assert.Equal(t, "stack", labels["com.docker.stack.namespace"])
+	assert.Equal(t, "service", labels["com.docker.service.name"])
+	assert.Equal(t, "stack-service", labels["com.docker.service.id"])
+}
+
+func TestSelectorForStack(t *testing.T) {
+	assert.Equal(t, "com.docker.stack.namespace=demostack", SelectorForStack("demostack"))
+	assert.Equal(t, "com.docker.stack.namespace=stack,com.docker.service.name=service", SelectorForStack("stack", "service"))
+	assert.Equal(t, "com.docker.stack.namespace=stack,com.docker.service.name in (service1,service2)", SelectorForStack("stack", "service1", "service2"))
+}