xmpp: allow recorders to bypass lobby

Closes: https://github.com/jitsi/docker-jitsi-meet/pull/716

prosody/rootfs/defaults/conf.d/jitsi-meet.cfg.lua

@@ -68,6 +68,9 @@ VirtualHost "{{ .Env.XMPP_DOMAIN }}"
     {{ if and $ENABLE_LOBBY (not $ENABLE_GUEST_DOMAIN) }}
     main_muc = "{{ .Env.XMPP_MUC_DOMAIN }}"
     lobby_muc = "lobby.{{ .Env.XMPP_DOMAIN }}"
+    {{ if .Env.XMPP_RECORDER_DOMAIN }}
+    muc_lobby_whitelist = { "{{ .Env.XMPP_RECORDER_DOMAIN }}" }
+    {{ end }}
     {{ end }}
 
     speakerstats_component = "speakerstats.{{ .Env.XMPP_DOMAIN }}"
@@ -87,6 +90,9 @@ VirtualHost "{{ .Env.XMPP_GUEST_DOMAIN }}"
 
     main_muc = "{{ .Env.XMPP_MUC_DOMAIN }}"
     lobby_muc = "lobby.{{ .Env.XMPP_DOMAIN }}"
+    {{ if .Env.XMPP_RECORDER_DOMAIN }}
+    muc_lobby_whitelist = { "{{ .Env.XMPP_RECORDER_DOMAIN }}" }
+    {{ end }}
     {{ end }}
 
 {{ end }}