[EDIFTools] UniqueifyNetlist() to reset parent net map (Xilinx#1175)

Signed-off-by: Eddie Hung <[email protected]>

Author: eddieh-xlnx

src/com/xilinx/rapidwright/edif/EDIFTools.java

@@ -1344,6 +1344,8 @@ public static Boolean uniqueifyNetlist(Design design) {
             duplicateMultiInstCell(design, curr, toUniqueify);
         }
 
+        netlist.resetParentNetMap();
+
         return true;
     }