### Description
rtpengine module is hijacking the DTLS key
rtpengine_manage("DTLS=off")
DTLS=off is a valid command to rtpengine, but the module uses that flag to set transport as UDP/TLS/RTP/SAVP
Unfortunately even though the transport can be fixed by RTP/SAVP, the lines outputted by rtpengine
a=setup:actpass a=fingerprint:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
confuse some UACs that were expecting only SDES. FreeSWITCH is affected.
### Troubleshooting
#### Reproduction
rtpengine_manage("DTLS=off"). tcpdump the traffic between kamailio and rtpengine. Obseve that there is no DTLS=off key.
#### Debugging Data
#### Log Messages
#### SIP Traffic
### Possible Solutions
Don't look for DTLS key, let that be passthrough to kamailio
### Additional Information
5.1.2
* **Operating System**: Linux CentOS 7.4