Elasticsearch legacy index template

[felrivero]

Is your feature request related to a problem? Please describe. There is a problem when using temporal with elasticsearch in which index templates are created in a new format https://www.elastic.co/guide/en/elasticsearch/reference/7.17/index-templates.html

Describe the solution you'd like Convert index templates to a new format https://www.elastic.co/guide/en/elasticsearch/reference/7.17/index-templates.html

Additional context Temporal uses deprecated index templates to work with Elasticsearch ( https://www.elastic.co/guide/en/elasticsearch/reference/7.17/indices-templates-v1.html ) And does not combine the settings from the index template of the new version

[rodrigozhou]

Can you provide more details what's the new format? What's the difference?