Push message to specific elastic index based on values of one or more fields of the record

[rohankapoor1]

I was thinking to propose a new configuration (like record.index.map) while setting up the connector where user can give a record field or combination of record fields which can be used to push this record to a particular ES index.

Eg:
Record = {"fieldA" : "valueA",
"fieldB" : "valueB",
"fieldC" : "valueC",
"fieldD" : "valueD"}

record.index.map = [fieldA]-[fieldC]

So, this record will be stored into ES index named: valueA-valueC
As it will be a default configuration provided so any external Kafka connect plugin like RegexRouter and TimestampRouter may not be needed. And I am thinking this will be useful for many consumers.
What's your thought on this @skynyrd ?
Also, can you please add a license file to the project. It would be nice.