Improve robustness of confluent check

Use the existence of the presumed log as a stronger indication
of the use of confluent.  Continue to shy away from slowing
things down by getting the site table, to avoid the slow check.

xCAT-server/bin/replaycons

@@ -72,7 +72,7 @@ if ($hmtab) {
 my $file = "/var/log/consoles/$node";
 
 #use confluent if it is there
-if ((-x "/opt/confluent/bin/confetty") || (-x "/usr/bin/confetty")) {
+if (((-x "/opt/confluent/bin/confetty") || (-x "/usr/bin/confetty")) && -f "/var/log/confluent/consoles/$node") {
     $file = "/var/log/confluent/consoles/$node";
 }