fix(hocon): call new schema definition functions

apps/emqx/src/emqx_schema.erl

@@ -1180,18 +1180,16 @@ ceiling(X) ->
 
 %% types
 
-t(T) ->
+t(Type) -> hoconsc:t(Type).
-    fun (type) -> T; (_) -> undefined end.
 
-t(T, M, D) ->
+t(Type, Mapping, Default) ->
-    fun (type) -> T; (mapping) -> M; (default) -> D; (_) -> undefined end.
+    hoconsc:t(Type, #{mapping => Mapping, default => Default}).
 
-t(T, M, D, O) ->
+t(Type, Mapping, Default, OverrideEnv) ->
-    fun (type) -> T;
+    hoconsc:t(Type, #{ mapping => Mapping
-        (mapping) -> M;
+                     , default => Default
-        (default) -> D;
+                     , override_env => OverrideEnv
-        (override_env) -> O;
+                     }).
-        (_) -> undefined end.
 
 ref(Field) ->
     fun (type) -> Field; (_) -> undefined end.

apps/emqx_dashboard/priv/emqx_dashboard.schema

@@ -7,7 +7,7 @@
 
 {mapping, "dashboard.default_user.password", "emqx_dashboard.default_user_passwd", [
   {datatype, string},
-  {override_env, "ADMIN_PASSWORD"}
+  {override_env, "EMQX_ADMIN_PASSWORD"}
 ]}.
 
 {mapping, "dashboard.listener.http.port", "emqx_dashboard.listeners", [