Context:
In the past ElasticSearch hat indexes and types. We needed both, a name for the index and type. To make the index unique we prefixed with Optimize-. We still need the prefix attachment, but now with ElasticSearch 7 we can generate the index names at Optimize startup once and then get rid of all automatic index name generation.

AT:

• the correct index names are automatically generated on Optimize startup and used everywhere.
• the automatic prefix generation in the optimize ElasticSEarch client has been removed