owners, network: Set auto-labeling
owners, network: Set auto-labeling

Changes in the tests/network folder will add a `sig/network` label
automatically.

Signed-off-by: Edward Haas <416ab6a6c3e37a8cab0d365516e79cce8f9be5ad@redhat.com>

kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt