Move `cinny_hostname` to `matrix_servers`

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

group_vars/matrix_servers

@@ -4317,6 +4317,8 @@ cinny_self_check_validate_certificates: "{{ matrix_playbook_ssl_enabled }}"
 
 cinny_base_path: "{{ matrix_base_data_path }}/client-cinny"
 
+cinny_hostname: "{{ matrix_server_fqn_cinny }}"
+
 ######################################################################
 #
 # /cinny

roles/custom/matrix-client-cinny/defaults/main.yml

@@ -142,10 +142,6 @@ cinny_hsts_preload_enabled: false
 
 cinny_scheme: https
 
-# The hostname at which Cinny is served.
-# Only works with with Traefik reverse-proxying.
-cinny_hostname: "{{ matrix_server_fqn_cinny }}"
-
 # The path at which Cinny is exposed.
 # This value must either be `/` or not end with a slash (e.g. `/cinny`).
 cinny_path_prefix: /