Waarp-manager should exit startup in error if some configuration value are not properly set.
- R66.DesKey should be a readable file of size 8
- R66.OutDir should be an existing writable directory
- R66.R66Cmd should be an existing and executable file
- R66.DiffusionRule should be an existing template in the database
- R66.RestSigningKey should be a readable file of size 64