include not yet routed servers as failover target candidate

failover.ps1

@@ -11,12 +11,12 @@ $offlineAddressList = $failoverAddressList | Where-Object active_server_ip -noti
 $maximumAddressCount = [Math]::Ceiling($failoverAddressList.Count / $onlineNodeList.Count)
 
 $i = 0
-$addressGroupList = $failoverAddressList `
+$addressGroupList = $failoverAddressList+($onlineNodeList.Status.Addr | ForEach-Object {@{active_server_ip=$_}}) `
 | Where-Object active_server_ip -in $onlineNodeList.Status.Addr `
 | Group-Object active_server_ip `
 | Sort-Object Count
 $distributionTarget = :distribution foreach ($addressGroup in $addressGroupList) {
-    $currentAddressCount = $addressGroup.Count
+    $currentAddressCount = $addressGroup.Count - 1
 
     while ($currentAddressCount -lt $maximumAddressCount) {
         if (!$offlineAddressList[$i]) {