Bug#828831: debsources: merge all config files in the repo into an unique one

[Matthieu Caneill <matt@brokenwa.re>]

Package: qa.debian.org
Severity: normal
Usertags: debsources

Currently we have many config files around:
- etc/config.ini, used for sources.d.n
- contrib/docker/config.ini used for docker images
- etc/config.travis.ini used for travis
- doc/examples/sample-config.local.ini as a documentation example

It is difficult to keep them up-to-date, and finding a way to have an
unique one would make things easier.

Cheers,
--
Matthieu

-- System Information:
Debian Release: stretch/sid
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.3.0-1-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)