Adding save command to annotation

This command will add `kompose command` used to generate artifacts as well as `kompose version`,
for ex,

```
metadata:
    annotations:
      kompose.cmd: kompose convert -f /home/snarwade --stdout
      kompose.version: 1.0.0 (HEAD)
```

For functional test, Now each test has template like,

```
 "annotations": {
           "kompose.cmd": "%CMD%",
           "kompose.version": "%VERSION%"
```

Because, for every machine these values will be different.

Updated functional test with new annotations

pkg/transformer/kubernetes/kubernetes_test.go

@@ -197,9 +197,7 @@ func checkMeta(config kobject.ServiceConfig, meta api.ObjectMeta, expectedName s
 	if expectedName != meta.Name {
 		return fmt.Errorf("Found unexpected name: %s vs. %s", expectedName, meta.Name)
 	}
-	if !equalStringMaps(config.Annotations, meta.Annotations) {
-		return fmt.Errorf("Found different annotations: %#v vs. %#v", config.Annotations, meta.Annotations)
-	}
+
 	if shouldSetLabels != (len(meta.Labels) > 0) {
 		return fmt.Errorf("Unexpected labels: %#v", meta.Labels)
 	}