Migrates jitsi-videobridge config file.

debian/jitsi-meet-prosody.postinst

 case "$1" in
     configure)
 
-        . /etc/default/jitsi-videobridge
+        . /etc/jitsi/videobridge/config
 
         PROSODY_CONFIG_PRESENT="true"
         PROSODY_HOST_CONFIG="/etc/prosody/conf.avail/$JVB_HOSTNAME.cfg.lua"

debian/jitsi-meet.postinst

 case "$1" in
     configure)
 
-        . /etc/default/jitsi-videobridge
+        . /etc/jitsi/videobridge/config
 
         # loading debconf
         . /usr/share/debconf/confmodule

debian/jitsi-meet.postrm

         db_get jitsi-meet/jvb-hostname
         JVB_HOSTNAME=$RET
         if [ -n "$RET" ]; then
-            #. /etc/default/jitsi-videobridge
             rm -f /etc/jitsi/meet/$JVB_HOSTNAME-config.js
             rm -f /etc/nginx/sites-available/$JVB_HOSTNAME.conf
             rm -f /etc/nginx/sites-enabled/$JVB_HOSTNAME.conf