Module updated for AWS OpenSearch and started upgrades

AWS ElasticSearch Service has been rebranded to AWS OpenSearch for some time now, and thus we’ve decided to rename our Terraform module for managing this service accordingly.

This open source module will setup an OpenSearch 1.1 domain by default, however it is still compatible with earlier versions of ElasticSearch. If you use this module yourself, make sure to read the migration notes, as there are several breaking changes to consider for existing setups.

For our customers, we’ve started upgrading all ElasticSearch 7.9+ domains to the new OpenSearch 1.1 version. If you’re using ElasticSearch 6.X, we will get into contact with you regarding an upgrade path.