KAFKA-13620: Use different metric name for KRaft SocketServer

[dengziming]

More detailed description of your change
In traditional we only have one SocketServer and one KafkaRequestHandlerPool in a process. In KRaft cluster, especially in co-resident mode, there may be multiple SocketServer and KafkaRequestHandlerPool, so we should avoid using the same MetricName.
I just added a prefix for the SocketServer and KafkaRequestHandlerPool in ControllerServer, to differentiate between the ones in BrokerServer.

Note that I didn't change Acceptor and Processor, since their metric name tags contain a listenerName, which will always be different for ControllerServer and BrokerServer.

Summary of testing strategy (including rationale)

1. integration tests.
2. Tested locally, now there are 2 KafkaRequestHandlerPool metrics in KRaft co-resident mode, compared to only one before.

Committer Checklist (excluded from commit message)

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