MT#18637 Don't show zone name and detail in zonecost API values

Zone name is used as a result hash key.
Zone detail should be obtained from zones API if necessary.

Change-Id: Ic45d79bb5c0fc0b637da542571c58ec10802ee6e

lib/NGCP/Panel/Utils/Contract.pm

@@ -279,8 +279,10 @@ sub get_contract_zonesfees {
         $allzones{$zname}{duration} += $cols{duration} || 0;
         $allzones{$zname}{free_time} += $cols{free_time} || 0;
         $allzones{$zname}{number} += $cols{number} || 0;
-        $allzones{$zname}{zone} = $zone->get_column('zone')//'';
-        $allzones{$zname}{zone_detail} = $zone->get_column('zone_detail')//'';
+        if($params{group_by_detail}){
+            $allzones{$zname}{zone} = $zone->get_column('zone')//'';
+            $allzones{$zname}{zone_detail} = $zone->get_column('zone_detail') // '';
+        }
     }
 
     return \%allzones;