anchor.diff:  [source,console-result]
   --------------------------------------------------
   {
  -  "logs-2016.10.31-000002": {
  +  "logs_2016.10.31-000002": {
       "aliases": {
         "logs_write": {}
       }
     },
  -  "logs-2016.10.31-1": {
  +  "logs_2016.10.31-1": {
       "aliases": {}
     }
   }
  
positive.code:   }
  }
  --------------------------------------------------
  // TEST[skip:"AwaitsFix https://github.com/elastic/elasticsearch/issues/62043"]
  
  <1> Creates an index named with today's date (e.g.) `logs-2016.10.31-1`
  <2> Rolls over to a new index with today's date, e.g. `logs-2016.10.31-000002` if run immediately, or `logs-2016.11.01-000002` if run after 24 hours
  
  //////////////////////////
  
  
negative.code: [source,console]
  --------------------------------------------------
  # PUT /<logs-{now/d}-1> with URI encoding:
  PUT /%3Clogs_%7Bnow%2Fd%7D-1%3E <1>
  {
    "aliases": {
      "logs_write": {}
  