multipath: add automatic configuration for multipath
    
    Add support for 'rd.multipath=default' for using the default
    configuration on boot. The intended purpose for this is to help support
    ostree-based image boots from multipathed devices (such as Fedora and
    Red Hat CoreOS).
    
    (cherry picked from commit b8a92b715677d52dbc2b27a710b9816fd8b9a63b)
    
    Resolves: #1888779
    
    patch_name: 0097.patch
    present_in_specfile: true
    location_in_specfile: 97
    squash_commits: true