Update cloud-netconfig to version 1.11 / rev 18 via SR 1154139
    
    https://build.opensuse.org/request/show/1154139
    by user jgleissner + dimstar_suse
    - Add Provides/Obsoletes for dropped cloud-netconfig-nm
    - Install dispatcher script into /etc/NetworkManager/dispatcher.d
      on older distributions
    - Add BuildReqires: NetworkManager to avoid owning dispatcher.d
      parent directory (forwarded request 1152918 from jgleissner)