registercloudguest and SUSEConnect exit code are not visible

[mpagot]

roles/sles_register/tasks/tasks.yml is configured with no_log: true. It is perfectly ok. When a failure happens it could be useful to see exit code of the executed command, what usually is showed in the Ansible log under rc. Possible stderr could be useful too but I'm not sure if it is going to leak the registration code.