Christoph Büscher 0c187e0a10
Add migration tool checks for _field_names disabling ()
This change adds a check to the migration tool that warns about the deprecated
`enabled` setting for the `_field_names` field on 7.x indices and issues a
warning for templates containing this setting, which has been removed
with 8.0.

Relates to , 
2019-09-25 10:15:10 +02:00
..