This update for os-update fixes the following issues:

- Update to version 1.14

  - Fix check if rebootmgrctl is installed

- Update to version 1.13

  - Skip restart of virtlockd by default

- Update to version 1.12

  - Add support for systemd soft-reboot

- Adjust URL to openSUSE github repo

- Update to version 1.11

  - Add LOG_TAG
  - Fix reboottrigger for SLES12 

- Require lsof

- Update to Version 1.10

  - Fix check if reboot is required
  - Improve/fix check if systemd needs to be restarted

- Update to Version 1.9

  - Minimal support for SLE12 (os-update)
  - From address now configureable (systemd-status-mail)
  - Include error messages of systemctl, too (systemd-status-mail)