Kerberos: not possible to use a specific keytab and principal for KafkaServer and Client section in jaas

[hifly81]

Describe the issue

File roles/kafka_broker/templates/kafka_server_jaas.conf.j2 requires that

• keyTab="{{kafka_broker_keytab_path}}"
• principal="{{kafka_broker_kerberos_principal}}";

are the same for both sections KafkaServer and Client

Expected behaviour

Some scenarios would require to have different keytab and principal for KafkaServer and Client