From profiling on cert rotation we know that the node informer is
called every couple of seconds on node heartbeats. This PR will ensure
that all our node listers only ever listen/inform on the master node
updates to reduce the frequency of unnecessary sync calls.

Also related to the issue, increasing the amount of node status updates:
OCPBUGS-29713
OCPBUGS-29424    

4.16 down to 4.12, we need to check all versions    

always

    1. create a cluster
    2. look at some metric
    3. observe improvement
    

increased amount of CPU usage for CEO    

less amount of CPU consumed for CEO    

already fixed in 4.16 with
https://github.com/openshift/cluster-etcd-operator/pull/1205

creating this ticket for backporting