Checkmk Werk 13213: real-time-checks: fix decryption if agent encryption is anabled

ID: 13213 Title: real-time-checks: fix decryption if agent encryption is anabled Component: Checks & agents Level: 1 Class: Bug fix Version: 2.1.0i1 Since version 1.2.9 the real time check encryption did not work if the agent encryption was activated, as the agent also uses the corresponding secret to encrypt the payload of the real-time UDP packets in this case. The Checkmk server now follows this logic when encrypting the packets.