fence_kubevirt: take default namespace from context

[dankenigsberg]

If --namespace is not provided to kubectl, a default one is taken from kubeconfig context. Let fence_kubevirt behave similarly.

Signed-off-by: Dan Kenigsberg danken@redhat.com

[knet-ci-bot]

Can one of the admins verify this patch?

[dankenigsberg]

/cc @nirarg @oalbrigt

[oalbrigt]

ok to test

[oalbrigt]

Can you run make xml-upload and attach the updated metadata to the commit?

[oalbrigt]

Thanks.