Modify the cron command to avoid an e-mail with error message after RaR is installed but not properly configured when the cron command is triggered for the first time Related: rhbz1973448
The content of this branch was automatically imported from Fedora ELN with the following as its source: https://src.fedoraproject.org/rpms/rear#130bac656a9e9c99699cfb493c0e6b8c53ffc904