anchor.diff:  
   To test it out, delete the primary pod and view the watch pod log:
   ....
  -oc delete pod primary-dc
  +oc delete pod pr-primary
   oc logs watch
   oc get pod
   ....
  
positive.code: A final test is to see if the old replica is now a fully functioning
  primary by inserting some test data into it as follows:
  ....
  psql -h primary -U postgres postgres -c 'create table failtest (id int)'
  ....
  
  The above command still works because the watch container has
  
negative.code: 
  Then trigger a failover using this command:
  ....
  kubectl delete pod pr-primary
  ....
  
  Resume watching the watch container's log and verify that it
  