Copy configuration from ejabberd upstream (#120)

This applies the following changes from ejabberd upstream into ecs:
- Removed obsolete options log_*
- Added legacy port 5223
- Removed unnecessary IPv6 address in loopback acl
- Removed max_fsm_queue toplevel option which was set to default value
- Added mod_muc_occupantid, available since ejabberd 23.10

Those elements remain specific for this ecs image:
- Path to certificates generated for this image
- ACME remains disabled
- oauth enabled in X listener
- STUN and SIP disabled, with example configuration commented
- Admin access granted to admin account
- MUC/Sub enabled in default room options

ecs/conf/ejabberd.yml

@@ -18,10 +18,6 @@ hosts:
   - localhost
 
 loglevel: info
-log_rotate_size: 10485760
-log_rotate_date: ""
-log_rotate_count: 1
-log_rate_limit: 100
 
 certfiles:
   - /home/ejabberd/conf/server.pem
@@ -44,6 +40,14 @@ listen:
     shaper: c2s_shaper
     access: c2s
     starttls_required: true
+  -
+    port: 5223
+    ip: "::"
+    module: ejabberd_c2s
+    max_stanza_size: 262144
+    shaper: c2s_shaper
+    access: c2s
+    tls: true
   -
     port: 5269
     ip: "::"
@@ -133,7 +137,6 @@ acl:
     ip:
       - 127.0.0.0/8
       - ::1/128
-      - ::FFFF:127.0.0.1/128
   admin:
     user:
       - "admin@localhost"
@@ -203,8 +206,6 @@ shaper_rules:
     normal: all
   s2s_shaper: fast
 
-max_fsm_queue: 10000
-
 acme:
    contact: "mailto:[email protected]"
    ca_url: "https://acme-staging-v02.api.letsencrypt.org/directory"
@@ -252,6 +253,7 @@ modules:
       allow_subscription: true  # enable MucSub
       mam: true
   mod_muc_admin: {}
+  mod_muc_occupantid: {}
   mod_offline:
     access_max_user_messages: max_user_offline_messages
   mod_ping: {}