Feature Overview (aka. Goal Summary)  

This feature aims to provide the capability to disable Kerberos FAST negotiation in the CMA Kafka Scaler. Some Kerberos Key Distribution Centers (KDCs), such as Active Directory, do not support FAST negotiation, leading to authentication issues. Currently, the Sarama library used by the Kafka Scaler has FAST negotiation enabled by default, and the scaler does not offer a way to modify this behavior. By introducing this feature, the Kafka Scaler will allow configuration options to disable FAST negotiation, enabling compatibility with KDCs that lack support for it.