Update mqtt-v4.sh

ct/mqtt-v4.sh

@@ -255,6 +255,11 @@ fi
 }
 clear
 start_script
+if [ "$CT_TYPE" == "1" ]; then 
+ FEATURES="nesting=1,keyctl=1"
+ else
+ FEATURES="nesting=1"
+ fi
 if [ "$VERB" == "yes" ]; then set -x; fi
 if [ "$CT_TYPE" == "1" ]; then
   FEATURES="nesting=1,keyctl=1"