Add label for initContainers

[dennohpeter]

What would you like to be added?

Add
kompose.init-contaners.name: "foo",
kompose.init-contaners.image: "bar",
kompose.init-contaners.command: [] labels

Why is this needed?

This will ease the migration from docker-compose to kubernetes and will remove the need to manually edit the generated yaml files.

[AhmedGrati]

/assign

[TessaIO]

/assign sosan

[k8s-ci-robot]

@TessaIO: GitHub didn't allow me to assign the following users: sosan.

Note that only kubernetes members with read permissions, repo collaborators and people who have commented on this issue/PR can be assigned. Additionally, issues/PRs can only have 10 assignees at the same time.
For more information please see the contributor guide

In response to this:

/assign sosan

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[cdrage]

Closed in #1840