Set selinux policy to permissive

[jovial]

This will avoid the need for a reboot:

TASK [selinux : Ensure desired SELinux state] **********************************************************************************************************************[36/1977]
Wednesday 29 November 2023  12:45:39 +0100 (0:00:00.850)       0:01:15.944 ****                                                                                              
[WARNING]: Reboot is required to set SELinux state to 'permissive'
changed: [monitor1]                                                                   
                                                                                      
TASK [selinux : Abort SELinux configuration because reboot is disabled] *****************************************************************************************************
Wednesday 29 November 2023  12:45:41 +0100 (0:00:01.457)       0:01:17.401 **** 
fatal: [monitor1]: FAILED! => changed=false               
  msg: |-                                                                             
    SELinux state change requires a reboot, but selinux_do_reboot is false. Please run again with selinux_do_reboot set to true to reboot.

[jovial]

Attempting to build this here: https://github.com/stackhpc/stackhpc-kayobe-config/actions/runs/7032155163

[markgoddard]

I did something similar in #790. The main difference is I only set to permissive on RL9. This aligns with #793.

The main issue is that the image includes RL9.3, whereas our snapshots are still 9.2. I tried pinning the repos in the image but it didn't work.

[jovial]

Closing as I wasn't aware of the other PR. Thought this would be a quick fix to save some reboots, but fixing to package snapshots seems like a bigger task.