multipath: require kpartx binary
    
    multipath requires kpartx to activate device mapper.
    But kpartx is only a recommend dependency.
    
    Check for kpartx's existent first.
    
    Signed-off-by: Doan Tran Cong Danh <congdanhqx@gmail.com>
    (cherry picked from commit cf31ed2ae687d9898cafc11ec6e4f478e806ad38)
    
    Resolves: #1888779
    
    patch_name: 0095.patch
    present_in_specfile: true
    location_in_specfile: 95
    squash_commits: true