Description of problem:
When the master node where the kubemacpool-mac-controller-manager pod is running is being rebooted, a user is unable to start or stop a previously created VM.

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

How reproducible:
100%

Steps to Reproduce:
1. Create a VM.
2. Reboot the node where the kubemacpool-mac-controller-manager pod is running
3. Try to start or stop the previously created VM while the node is being rebooted.

Actual results:
The VM is not started or stopped.

1. virtctl start vm
   Error starting VirtualMachine Internal error occurred: Internal error occurred: failed calling webhook "mutatevirtualmachines.kubemacpool.io": failed to call webhook: Post "https://kubemacpool-service.openshift-cnv.svc:443/mutate-virtualmachines?timeout=10s": dial tcp 10.130.0.11:8000: connect: connection refused

Expected results:
The VM can be started or stopped.

Additional info:
Tested on 4.11 cluster with 3 masters and 3 workers