revert default compress mode for vzdump to 0

rationale is the following:

we had this as default before commit
1ab98f059e

but wrongly documented

since we set the compression mode explicitly via the gui,
we can set the default to 0, which makes some operations more
intuitive (e.g. with the -stdout parameter it makes no sense
to compress it by default)

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

PVE/VZDump.pm

@@ -58,7 +58,7 @@ my $confdesc = {
 	description => "Compress dump file.",
 	optional => 1,
 	enum => ['0', '1', 'gzip', 'lzo'],
-	default => 'lzo',
+	default => '0',
     },
     pigz=> {
 	type => "integer",

debian/changelog.Debian

@@ -2,6 +2,8 @@ pve-manager (4.1-26) unstable; urgency=medium
 
   * do not depend of pve-doc-generator (this should be a Build-Depend instead)
 
+  * revert default compress mode for vzdump to 0
+
  -- Proxmox Support Team <support@proxmox.com>  Tue, 12 Apr 2016 12:41:34 +0200
 
 pve-manager (4.1-25) unstable; urgency=medium