anchor.diff:  }
   ----
   
  -Random configuration example combining static and configurable predicates and priority functions
  +Configuration example combining static and configurable predicates and
  +priority functions:
   ----
   {
   	"kind" : "Policy",
  
positive.code: }
  ----
  
  Three topological levels defined as city (affinity) --> building (anti-affinity) --> room (anti-affinity)
  ----
  {
  	"kind" : "Policy",
  
negative.code: }
  ----
  
  Only use nodes with the 'region' label defined and prefer nodes with the 'zone'
  label defined:
  ----
  {
  	"kind" : "Policy",
  