Fix asterisk & asterisk: 13.6.0 -> 14.1.2 (#20788)

* fix/asterisk-module: use unix-group for asterisk-files
* fix/asterisk-module: add configOption to use some default config-files
* fix/asterisk-module: correction of skel copy
* fix/asterisk-module: use /etc/asterisk as configDir
* fix/asterisk-module: add reload; do not restart unit
* asterisk: 13.6.0 -> 14.1.2
* fix/asterisk: compile with lua, pjsip, format_mp3
* fix/asterisk: fix indentation
* fix/asterisk: remove broken flag