[PATCH manager] network-interface-pinning: ignore comments in .link parser

[Gabriel Goller <g.goller@proxmox.com>]

The parser for the systemd .link files didn't support comments. This
means executing `pve-network-interface-pinning generate` after pinning
interfaces with the installer was broken because we add a comment there.

Skip lines starting with '#' or ';' while parsing (according to `man
systemd.syntax`).

Reported-by: Robert Obkircher <r.obkircher@proxmox.com>
Signed-off-by: Gabriel Goller <g.goller@proxmox.com>
---

Note that this bug is old, it was already there in the previous
release.

 PVE/CLI/pve_network_interface_pinning.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PVE/CLI/pve_network_interface_pinning.pm b/PVE/CLI/pve_network_interface_pinning.pm
index 8e419603be60..9dff181dcd9d 100644
--- a/PVE/CLI/pve_network_interface_pinning.pm
+++ b/PVE/CLI/pve_network_interface_pinning.pm
@@ -158,7 +158,7 @@ my sub parse_link_file {
     my $data = {};
 
     for my $line (@lines) {
-        next if $line =~ m/^\s*$/;
+        next if $line =~ m/^\s*(?:[#;]|$)/;
 
         if ($line =~ m/^\[(Match|Link)\]$/) {
             $section = $1;
-- 
2.47.3