createpod chain element should delete the pod if container with nse is done

[denis-tingaikin]

currently createpod chain element doesn't support a case when nse container is stopping, but other containers in the supplied pod are still running.

For this case we should delete the pod.

Usecase

1. change scale from zero example
2. add to template additional container (for example alpine)
3. run the example (scale from zero)
4. delete nsc

actual: created pod is not deleting.
expected: created pod is deleting.

Potential fix

Check here https://github.com/networkservicemesh/sdk-k8s/blob/main/pkg/networkservice/common/createpod/server.go#L181 that added nse container is done