Remote Execution (REX) is a crucial plugin for many users. When reading the Managing Hosts (6.18) guide it is used all over the place. In particular, https://docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/managing_hosts/configuring_and_setting_up_remote_jobs_managing-hosts describes the different modes how it can be set up.

Acceptance criteria:

• Users can still use same supported foreman_remote_execution plugin and all of its features after Satellite has been containerized.
• Remote Execution via SSH works with Password, Public Key and Kerberos authentication
• Remote Execution via MQTT/Pull works
• Cockpit Integration of Remote Execution works
• All documented workflows (like changing the remote working directory, distributing ssh keys, etc) are still working or have been updated.
• Rewritten code is tested and verified.
• The documentation is updated

Note: It might be beneficial to split this story into multiple (SSH/MQTT/Cockpit)