Set selinux_do_reboot to true for ci-multinode (#1324)

``selinux_do_reboot`` is false by default in Kayobe.
This causes multinode automation to fail in host configure
because selinux state is updated but reboot is not allowed.

This allows reboot so, host configure can run without failure.

etc/kayobe/environments/ci-multinode/globals.yml

@@ -60,6 +60,9 @@ os_release: >-
 stackhpc_write_barbican_role_id_to_file: true
 stackhpc_barbican_role_id_file_path: "/tmp/barbican-role-id"
 
+# Enable rebooting to update SELinux state
+selinux_do_reboot: true
+
 ###############################################################################
 # Dummy variable to allow Ansible to accept this file.
 workaround_ansible_issue_8743: yes