security: don't provide default passwords

Also check if they are not provided at sstartup time and fail to start
in that case.

prosody/rootfs/etc/cont-init.d/10-config

@@ -34,7 +34,18 @@ if [[ ! -f $PROSODY_CFG ]]; then
     tpl /defaults/prosody.cfg.lua > $PROSODY_CFG
     tpl /defaults/conf.d/jitsi-meet.cfg.lua > /config/conf.d/jitsi-meet.cfg.lua
 
+    if [[ -z $JICOFO_COMPONENT_SECRET || -z $JICOFO_AUTH_PASSWORD ]]; then
+        echo 'FATAL ERROR: Jicofo component secret and auth password must be set'
+        exit 1
+    fi
+
     prosodyctl --config $PROSODY_CFG register $JICOFO_AUTH_USER $XMPP_AUTH_DOMAIN $JICOFO_AUTH_PASSWORD
+
+    if [[ -z $JVB_AUTH_PASSWORD ]]; then
+        echo 'FATAL ERROR: JVB auth password must be set'
+        exit 1
+    fi
+
     prosodyctl --config $PROSODY_CFG register $JVB_AUTH_USER $XMPP_AUTH_DOMAIN $JVB_AUTH_PASSWORD
 
     if [[ ! -z $JIBRI_XMPP_USER ]] && [[ ! -z $JIBRI_XMPP_PASSWORD ]]; then