KAFKA-16810: Add flag to read from specific partitions while checking consumer performance

[BOOTMGR]

kafka-consumer-perf-test is a great tool to quickly check raw consumer performance. Currently, It subscribes to all the partitions and gives overall cluster performance, however If we want to test performance of single broker/partition, existing tool does not support.

This PR introduces two optional flags --partitions and --offsets which gives flexibility to benchmark only specific partitions optionally from specified offsets.

Committer Checklist (excluded from commit message)

• Verify design and implementation
• Verify documentation (including upgrade notes)
• Verify test coverage and CI build status

[lianetm]

Hey @BOOTMGR, I would expect we need a KIP for this. It brings changes in the command line tool arguments, which is considered a public interface (check KIP page here)

[BOOTMGR]

Hey @BOOTMGR, I would expect we need a KIP for this. It brings changes in the command line tool arguments, which is considered a public interface (check KIP page here)

Thanks for looking into this, I will file KIP.