Support 'wildcard' field type [DATAES-946]

[spring-projects-issues]

chrisgleissner opened DATAES-946 and commented

Please add mapping support for the 'wildcard' field type introduced with Elasticsearch 7.9. Currently, the @Field annotation lacks this new type. 

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Affects: 4.1 RC1 (2020.0.0)

Reference URL: https://www.elastic.co/guide/en/elasticsearch/reference/7.9/keyword.html#wildcard-field-type

Referenced from: pull request #571