KIP-1129 — Update ConfigException constructors

Discussion AdminClient

Adds ConfigException(String message, Throwable cause) and ConfigException(String name, Object value, String message, Throwable cause) constructors, and deprecates ConfigException(String name, Object value). The existing two-argument constructor misled developers into passing a Throwable as the second argument (intended as the value), silently discarding the root cause from the stack trace and making TLS and other configuration errors difficult to debug.

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