This is implemented by adding a "package" parameter to apt::preferences_snippet,
so that define names can be kept unique while the package names are
not necessarily.
Closes: Redmine#3468.
Currently, setting the $custom_preferences variable to false fails
because of the /etc/apt/preferences concatenated_file being re-defined.
Fix this by setting dependencies on the resource only when we expect to
create the /etc/apt/preferences file. Also, since there is no "ensure"
parameter to concatenated_file, use a simple file resource to ensure
that it is removed.
Signed-off-by: Gabriel Filion <lelutin@gmail.com>
Simplifications: make apt_conf_snippet repeat less code, make code that
generates sources.list more concise.
Remove all inline content in favor of templates and static files.
The ability to include sources for static files was needed for
the main 'preferences' file, so it was added to the preferences_snippet
define.
Signed-off-by: Gabriel Filion <lelutin@gmail.com>
