Description of problem:

Improvement in CNV/OCP docs

Version-Release number of selected component (if applicable):

4.18.z

Summary:

As per the doc we can use the secondary network in AWS using OVN Kubernetes overlay network, but this is not fully correct we cannot use localnet in AWS as it doesn't work. The arp replies never come back.

We should specifically specify that we can only layer2 topology only.