network-manager: don't run NetworkManager when there are no connections
    
    NetworkManager would unnecessarily bring up the devices, colliding with
    further attempts to rename the devices.
    
    This is arguably a NetworkManager bug and should eventually be fixed there.
    Running NetworkManager without the connection is unnecessary regardless.
    
    (cherry picked from commit 5965710e018989b02a56e8d190b71740ca3b5463)
    
    Resolves: #1826061
    
    patch_name: 0071.patch
    present_in_specfile: true
    location_in_specfile: 71
    squash_commits: true