Backport commit to count common rsync xfer errors

GLPI #34026
f5904a1f40

BackupPC4-4.2.1-count_rsync_xfer_errors.patch

@@ -0,0 +1,16 @@
+diff -Nur -x '*.orig' -x '*.rej' BackupPC-4.2.1/lib/BackupPC/Xfer/Rsync.pm mezzanine_patched_BackupPC-4.2.1/lib/BackupPC/Xfer/Rsync.pm
+--- BackupPC-4.2.1/lib/BackupPC/Xfer/Rsync.pm	2018-05-07 19:14:29.000000000 +0200
++++ mezzanine_patched_BackupPC-4.2.1/lib/BackupPC/Xfer/Rsync.pm	2018-11-05 15:43:26.616901808 +0100
+@@ -546,6 +546,12 @@
+                 }
+                 $t->{stats}{xferErrs}++;
+             }
++            if ( /^rsync error: / || /^rsync warning: / ) {
++                $t->{stats}{xferErrs}++;
++            }
++            if ( /^rsync: send_files failed to open / || /^file has vanished: / ) {
++                $t->{stats}{xferErrs}++;
++            }
+             if ( /^IOrename:\s(\d+)\s(.*)/ ) {
+                 my $oldName = substr($2, 0, $1);
+                 my $newName = substr($2, $1);