redirect logs to files

[danangmassandy]

This is for https://github.com/unicef-drp/GeoRepo/issues/1196

Changes:

• Redis: Use redis.conf to redirect logs to file
• Django: Modify uwsgi.conf to redirect logs to file
• Worker/Celery Beat: Modify commands to redirect logs to file
• Nginx: Modify nginx.conf to redirect access and error logs to files

A new mount volume tmp_data is created to host all logs from every containers. Then logrotate service will pick every log files under this directory and rotate the log files. The default configuration for logrotate:

• keep 14 recent log files
• rotate when size is over 100 MB
• Interval to check is daily

I also added a django admin page to view all log files and download the file.

@meomancer I'm not sure where to put the model, for now I put it under machine_info_fetcher. Feel free to update this PR.