Add `messaging.kafka.bootstrap.servers` attribute to Kafka instrumentation

[wl2027]

Is your feature request related to a problem? Please describe.

Existing Kafka instrumentation does not capture any server/network details. So in case I have multiple kafka clusters in my application, I cannot differentiate between them.I also don't know either which nodes the operation is performed on. Meanwhile, this is relatively important for constructing the service topology graph.

Describe the solution you'd like

Add messaging.kafka.bootstrap.servers attribute to Kafka instrumentation that should:

• Extract bootstrap.servers information from Kafka client configurations
• Include this attribute in all relevant spans (producer spans, consumer process spans, consumer receive spans)

Describe alternatives you've considered

No response

Additional context

This feature request is related to #10647