Add engine commands built on containerd

This new collection of commands supports initializing a local
engine using containerd, updating that engine, and activating
the EE product

Signed-off-by: Daniel Hiltgen <daniel.hiltgen@docker.com>

e2eengine/utils.go

@@ -0,0 +1,39 @@
+package e2eengine
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"github.com/docker/cli/internal/containerizedengine"
+)
+
+// CleanupEngine ensures the local engine has been removed between testcases
+func CleanupEngine(t *testing.T) error {
+	t.Log("doing engine cleanup")
+	ctx := context.Background()
+
+	client, err := containerizedengine.NewClient("")
+	if err != nil {
+		return err
+	}
+
+	// See if the engine exists first
+	engine, err := client.GetEngine(ctx)
+	if err != nil {
+		if strings.Contains(err.Error(), "not present") {
+			t.Log("engine was not detected, no cleanup to perform")
+			// Nothing to do, it's not defined
+			return nil
+		}
+		t.Logf("failed to lookup engine: %s", err)
+		// Any other error is not good...
+		return err
+	}
+	// TODO Consider nuking the docker dir too so there's no cached content between test cases
+	err = client.RemoveEngine(ctx, engine)
+	if err != nil {
+		t.Logf("Failed to remove engine: %s", err)
+	}
+	return err
+}