RANGER-4808 : Enhance KafkaAuditProvider for Audit V3

[dntjr8096]

What changes were proposed in this pull request?

• https://issues.apache.org/jira/browse/RANGER-4808

How was this patch tested?

I wrote some test code to check it out, and built and tested it on my internal Hadoop cluster. In the internal cluster, we are producing Impala ranger audit logs to a Kafka cluster.

The Hadoop environment is as follows

• Hadoop: 3.3.4
• Ranger : 2.3.0
• Impala : 4.1.1