dracut: Disable ostree-prepare-root
    
    Resolves: RHEL-35885
    
    commit 42cdc05a8c99a2c0834377faca04b583404cb86f
    Author: Colin Walters <walters@verbum.org>
    Date:   Fri Jul 19 14:23:39 2024 -0400
    
        dracut: Disable ostree-prepare-root
    
        In some images such as the recent fedora/rhel bootc base image,
        the ostree dracut module is statically enabled:
        https://gitlab.com/fedora/bootc/base-images/-/blob/40df0eb3827763039e4d17264968e37f850b70e5/tier-0/initramfs.yaml#L9
    
        And also recently, we changed the ostree systemd unit
        to enter emergency.target if it fails in:
        https://github.com/ostreedev/ostree/pull/3220/commits/05b3b662756def30026fc722d0832a24a33d9803
    
        These two things combine mean we'll fail before kdump gets
        a chance to run.
    
        For our use case we don't need ostree in the initrd.
    
        I tried to override this with `--omit=ostree` in our dracut
        invocation, but that causes an error (dracut doesn't let the
        cmdline override static config).
    
        For now, let's just mask the service in our initrd.
    
    Signed-off-by: Lichen Liu <lichliu@redhat.com>