KIP-492 — Add java security providers in Kafka Security config

Accepted Kafka 2.4 Security

Adds a `security.providers` configuration accepting a comma-separated list of `java.security.Provider` class names that Kafka will dynamically register into the JVM security framework at startup. Custom `KeyManager`/`TrustManager` algorithms referenced via `ssl.keymanager.algorithm` require their `Provider` to be registered in `java.security` JVM properties, forcing operators to modify JVM startup files rather than Kafka configuration.

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