basertpendpoint: add externalIPv4 and externalIPv6 parameters, simila…#5

dpocock wants to merge 1 commit intonaevatec:bionic-gstreamernaevatec/kms-elements:bionic-gstreamerfrom

dpocock:naevatec/bionic-gstreamer-external-IPdpocock/kms-elements:naevatec/bionic-gstreamer-external-IPCopy head branch name to clipboard