Jim Ferenczi 37725f640c Add missing field type in the FieldStats response.
This change adds the type of the field in the fieldstats response.
It can be one of the following:
  * "integer" for byte, short, integer and long
  * "float" for float, half-float and double
  * "date" for date
  * "ip" for ip
  * "text" for string, keyword and text.

Closes #17750
2016-07-06 15:24:09 +02:00
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