Warn about CBT enabled VMs via vsphere-problem-detector

We should check if CBT is enabled in cluster's nodes on vSphere platform.

1. Perform a full sweep and log each node which has CBT enabled.
2. Create an alert if some VMs have CBT enabled and other don't.
3. Alert should not be emitted if all VMs in cluster are uniformly CBT enabled.

This will avoid issues like - https://issues.redhat.com/browse/OCPBUGS-12249?filter=12399251