basic/user-util: allow dots in user names
    
    (based on commit 1a29610f5fa1bcb2eeb37d2c6b79d8d1a6dbb865)
    
    Resolves: #1717603
    
    patch_name: 0250-basic-user-util-allow-dots-in-user-names.patch
    present_in_specfile: true
    location_in_specfile: 250
    squash_commits: true