Fix problem where nodegrpch would fail to modify tables where 'nodecol' is not 'node'

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@13119 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

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

@@ -1617,7 +1617,7 @@ sub nodech
                                 if ($_ eq $nodekey) { next; } #skip attempts to manipulate 'node' type columns in a groupch
                                 $clrhash{$_}="";    
                             }
-                            $tabhdl->setAttribs({node=>$entity},\%uhsh);
+                            $tabhdl->setAttribs({$nodekey=>$entity},\%uhsh);
                             $changed=1;
                             $nodes = [noderange($entity)];
                             unless (scalar @$nodes) { next; }