fix defect 3396951 Hitachi group not preserved on rsync

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/branches/2.6@10384 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

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

@@ -11169,7 +11169,7 @@ sub sync_spot_files
             # for each file on the line
             # create rsync cmd
             #  run from management node even if it's not the nim primary
-            my $synccmd = "rsync -Lpotz ";
+            my $synccmd = "rsync -Lprogtz ";
 
             my $syncopt = "";
             foreach my $srcfile (@srcfiles)
@@ -11182,7 +11182,7 @@ sub sync_spot_files
             $syncopt .= $imageupdatepath;
             $synccmd .= $syncopt;
 
-            # ex. xdsh $nimprime "rsync -Lpotz /etc/foo /install/nim/spot/.../inst_root/etc"
+            # ex. xdsh $nimprime "rsync -Lprogtz /etc/foo /install/nim/spot/.../inst_root/etc"
             if ($::VERBOSE)
             {
                 my $rsp;