allow to write builtin auth domains

So that we can set tfa, comment, default with the GUI.

PVE/API2/Domains.pm

@@ -142,9 +142,6 @@ __PACKAGE__->register_method ({
 
 		my $realm = extract_param($param, 'realm');
 
-		die "unable to modify bultin domain '$realm'\n"
-		    if ($realm eq 'pam' || $realm eq 'pve');
-
 		die "domain '$realm' does not exist\n" 
 		    if !$ids->{$realm};
 

PVE/Auth/Plugin.pm

@@ -198,9 +198,6 @@ sub parse_config {
 sub write_config {
     my ($class, $filename, $cfg) = @_;
 
-    delete $cfg->{ids}->{pve};
-    delete $cfg->{ids}->{pam};
-
     foreach my $realm (keys %{$cfg->{ids}}) {
 	my $data = $cfg->{ids}->{$realm};
 	if ($data->{comment}) {

changelog.Debian

@@ -9,6 +9,8 @@ libpve-access-control (3.0-14) unstable; urgency=low
   * dedend on oathtool
   
   * depend on libmime-base32-perl
+  
+  * allow to write builtin auth domains config (comment/tfa/default)
 
  -- Proxmox Support Team <support@proxmox.com>  Thu, 17 Jul 2014 13:09:56 +0200