Have nodeset return a more helpful message when passwd table is missing an entry for esxi when doing esxi operations

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/branches/2.7@12977 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

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

@@ -4284,6 +4284,7 @@ sub  makecustomizedmod {
         }
     }
     unless ($password) {
+        xCAT::SvrUtils::sendmsg([1,": Unable to find a password entry for esxi in passwd table"], $output_handler);
         return 0;
     }
     mkpath("/tmp/xcat");