Spec file: depend on nfs-utils or nfsv4-client-utils
    
    The freeipa-client package currently requires nfs-utils.
    The requirement can be relaxed and modified into nfs-utils or
    nfsv4-client-utils.
    
    Fixes: https://pagure.io/freeipa/issue/9586
    
    Signed-off-by: Florence Blanc-Renaud <flo@redhat.com>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>