setKey() was actually "appendKey()". In addition, '-k' would not override for server configuration #5199
Unified -k behaviour for client and server mode now.
Using setKey() at runtime actually did not work if a key had been set already. setKey() was in fact appendKey(). Furthermore, -k did not operate in server mode. In client mode, there was an ugly override to make -k work. Unified this now to too server and client modes.