anchor.diff:  ----
   PUT _ingest/pipeline/my-pipeline
   {
  -  "processors" : [
  -    {
  -      "set" : {
  +  "processors": [
  +    {
  +      "set": {
           "description": "Set '_routing' to 'geoip.country_iso_code' value",
           "field": "_routing",
           "value": "{{geoip.country_iso_code}}"
  
positive.code: 
  PUT my-data-stream/_bulk?pipeline=my-pipeline
  { "create":{ } }
  { "@timestamp": "2099-03-08T11:04:05.000Z", "my-keyword-field" : "foo" }
  { "create":{ } }
  { "@timestamp": "2099-03-08T11:06:07.000Z", "my-keyword-field" : "bar" }
  ----
  
  You can also use the `pipeline` parameter with the <<docs-update-by-query,update
  
negative.code: ----
  PUT _ingest/pipeline/my-pipeline-id
  {
    "version": 1,
    "processors": [ ... ]
  }
  ----
  