Block custom internal endpoint that should never be called

- Is not spec'd
- Will not be spec'd
- Is 100% internal as per its authors

src/main/java/io/kamax/mxisd/HttpMxisd.java

@@ -21,6 +21,7 @@
 package io.kamax.mxisd;
 
 import io.kamax.mxisd.config.MxisdConfig;
+import io.kamax.mxisd.http.undertow.handler.InternalInfoHandler;
 import io.kamax.mxisd.http.undertow.handler.OptionsHandler;
 import io.kamax.mxisd.http.undertow.handler.SaneHandler;
 import io.kamax.mxisd.http.undertow.handler.as.v1.AsNotFoundHandler;
@@ -117,6 +118,9 @@ public class HttpMxisd {
                 .put(AsTransactionHandler.Path, asTxnHandler)
                 .put("/transactions/{" + AsTransactionHandler.ID + "}", asTxnHandler) // Legacy endpoint
 
+                // Banned endpoints
+                .get(InternalInfoHandler.Path, SaneHandler.around(new InternalInfoHandler()))
+
         ).build();
 
         httpSrv.start();