Updated default knox port number

Author: uc-msft

samples/features/sql-big-data-cluster/bootstrap-sample-db.sh

@@ -31,7 +31,7 @@ AW_WWI_SAMPLES=${AW_WWI_SAMPLES:=no}
 
 # Use default ports if not specified
 SQL_MASTER_PORT=${SQL_MASTER_PORT:=31433}
-KNOX_PORT=${KNOX_PORT:=30433}
+KNOX_PORT=${KNOX_PORT:=30443}
 SQL_MASTER_INSTANCE=$SQL_MASTER_IP,$SQL_MASTER_PORT
 KNOX_ENDPOINT=$KNOX_IP:$KNOX_PORT