asterisk: Need simpler conffiles definitions

Maintainer: @jslachta
Environment: x86_64, generic, HEAD
Description:

Looking at the conffiles definition in the Makefile, it's not clear it's correct.

Instead of enumerating the files in /etc/asterisk/ it would make more sense to just name that directory. For instance, if you make a copy of a config file as:

% cp -a extensions.conf extensions.conf.orig

before editing the file, or perhaps (periodically) a timestamped version of it like:

% cp -a extensions.conf extensions.conf.$(date +%Y%m%d)

then you'd want those files preserved across sysupgrades. I also note the lack of .ael files as being backed up.

The file /etc/init.d/asterisk isn't really modifiable and probably should be updated via sysupgrade (as options are expressed in /etc/config/asterisk instead).

Lastly, cryptographic keys (used by res_crypto) are stored in /var/lib/asterisk/keys/ and definitely should be backed up, along with /var/lib/asterisk/astdb/.

Start with the conffiles definition in the Makefile and review how the listed /etc/asterisk/, /var/lib/asterisk/keys/, and /var/lib/asterisk/astdb/ paths are handled by sysupgrade. Check the treatment of /etc/init.d/asterisk against the issue’s description. Done means the intended configuration, backup, key, and database files are preserved while the init script is updated appropriately.