-AAsn correctly told where to find plugins

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@3027 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

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

@@ -67,7 +67,6 @@ sub handled_commands
     }
 
     my $rc = 0;
-    my $plugins_dir=$::XCATROOT.'/lib/perl/xCAT_plugin';
 
     if (xCAT::Utils->isServiceNode())
     {
@@ -966,6 +965,7 @@ sub setup_TFTP
                 $cmdref->{command}->[0] = "nodeset";
                 $cmdref->{arg}->[0] = "enact";
                 $cmdref->{cwd}->[0]     = "/opt/xcat/sbin";
+                my $plugins_dir=$::XCATROOT.'/lib/perl/xCAT_plugin';
                 foreach my $modname (keys %netmethods) {
                     $cmdref->{node} = $netmethods{$modname};
                     require "$plugins_dir/$modname.pm";