kbd -configure permission error upgrading 14.04 on a VPS installation

[fiorenzi]

Upgrading server 14.04 on a vps to 15.05 we have get error on keyboard configuraiton and other package

Setting up keyboard-configuration (1.108ubuntu5) ...
/var/lib/dpkg/info/keyboard-configuration.postinst: line 102: /etc/default/keyboard: Permission denied
dpkg: error processing package keyboard-configuration (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of console-setup:
 console-setup depends on keyboard-configuration (= 1.108ubuntu5); however:
  Package keyboard-configuration is not configured yet.

dpkg: error processing package console-setup (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of kbd:
 kbd depends on console-setup | console-setup-mini; however:
  Package console-setup is not configured yet.
  Package console-setup-mini is not installed.

dpkg: error processing package kbd (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of console-setup-linux:
 console-setup-linux depends on kbd (>= 1.15-1ubuntu3); however:
  Package kbd is not configured yet.
 console-setup-linux depends on keyboard-configuration (= 1.108ubuntu5); however:
  Package keyboard-configuration is not configured yet.

dpkg: error processing package console-setup-linux (--configure):
 dependency probNo apport report written because the error message indicates it's a follow-up error from a previous failure.
                                                                                                                            No apport report written because the error message indicates it's a follow-up error from a previous failure.
                 No apport report written because MaxReports has already been reached
                                                                                     lems - leaving unconfigured
Errors were encountered while processing:
 keyboard-configuration
 console-setup
 kbd
 console-setup-linux
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@vps136831:~#

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubuntu-release-upgrader-core 1:15.04.14.2
Uname: Linux 3.10.23-xxxx-std-ipv6-64-vps x86_64
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
CrashDB: ubuntu
Date: Wed Oct 21 17:16:22 2015
InstallationDate: Installed on 2014-10-23 (363 days ago)
InstallationMedia:

PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 XDG_RUNTIME_DIR=<set>
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to vivid on 2015-10-21 (0 days ago)