- fix so that logs are written in /var/log/bigbluebutton/ using the ff convention

...d-playback/core/lib/recordandplayback/generators/audio.rb

...ack/core/lib/recordandplayback/generators/presentation.rb

...d-playback/core/lib/recordandplayback/generators/video.rb

record-and-playback/matterhorn/scripts/process/matterhorn.rb

record-and-playback/matterhorn/scripts/publish/matterhorn.rb

record-and-playback/simple/scripts/process/simple.rb

record-and-playback/simple/scripts/publish/simple.rb