Bug#791670: Ignore *.dpkg-* files in /etc/live/config

[Gaudenz Steinlin <gaudenz@debian.org>]

Source: live-config
Version: 5.0~a3-1
Severity: normal

live-config should ignore dpkg conffile backups like *.dpkg-old in
/etc/live/config. 

Creating a package to add custom configuration settings and components
to live-config is the recommended way to customize live-config. If such
a package is updated a conffile prompt may be shown by dpkg and dpkg
might leave behind backup files. These files should be ignored by
live-config.

Gaudenz

-- System Information:
Debian Release: stretch/sid
  APT prefers testing-proposed-updates
  APT policy: (500, 'testing-proposed-updates'), (500, 'testing'), (100, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)