PutSQL can duplicate provenance events

PutSQL.putFlowFiles gets called in a loop and it collects the executed FFs in a RoutingResult object which is basically a map. The method also sends provenance events for the processed FFs.

Bug: the method sends the events in every iteration for all the FFs already in the map, which leads to duplicated events in provenance history.

https://github.com/apache/nifi/blob/d72bfc76b58e035d5a10caa3a06efbcd7daab776/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/PutSQL.java#L387