-Fix problem where xCAT would not relinquish VMWare connections readily

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@4556 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-server/lib/xcat/plugins/esx.pm

@@ -330,6 +330,9 @@ sub process_request {
         return;
     } 
     do_cmd($command,@exargs);
+	foreach my $hyp (sort(keys %hyphash)){
+            $hyphash{$hyp}->{conn}->logout();
+    }
 }
 
 sub validate_licenses {