db3dc1c Clarify enabling/disabling procedures for SELinux

2 files Authored by omos 3 years ago, Committed by pbokoc 3 years ago,
    Clarify enabling/disabling procedures for SELinux
    
    * Simplify list of required packages (and add `grubby`).
    * Move Disabled -> Enforcing steps from `changing-to-enforcing-mode` to
      `enabling-selinux`.
    * In `changing-to-enforcing-mode`, use the correct procedure based on
      whether SELinux is currently Permissive or Disabled.
    * Add step for ensuring that filesystem is relabeled when re-enabling
      SELinux.
    
    Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>