All in one instance: Upgrade from v 6 to v 13.5.0-1

Hi @astrava,

After deploying a new DB, /opt/kaltura/app/configurations/batch/batch.ini needs to be updated so that the secret directive is set to the admin_secret of partner -1.
Get the secret with:

mysql>  select admin_secret from partner where id=-1;

update the file and restart the kaltura-batch service.