Implement the changes reflect the new functionality.
Current version: https://github.com/RedHatQE/openshift-virtualization-tests/blob/main/tests/network/l2_bridge/test_bridge_nic_hot_plug.py

We need to fix the automation, so instead of migrating VM to complete hot-un/plug, they will apply the VMRolloutStrategy.

• This change should be applied from 4.20; the tests of the previous versions must remain as they are, and utilize migration.
• The test must be executed as namespace-admin (non-privileged user), to make sure that the VMRolloutStrategy solution is indeed applicable for these users.