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Issue description

Lab grading fails (validating network policy step), when the ingress network policy is correctly using the actual preferred v4.12 label (expecting the old legacy label). This is technically incorrect, as per the two syntax is equal and there is no reference in the task to which to use.

Excerpt from the manual :

"
NOTE:

policy-group.network.openshift.io/ingress: "" is the preferred namespace selector label for OpenShift SDN. You can use the network.openshift.io/policy-group: ingress namespace selector label, but this is a legacy label.
"
See: https://docs.openshift.com/container-platform/4.12/networking/network_policy/multitenant-network-policy.html

Steps to reproduce:

Workaround:

Expected result: