Remove pdcclient since it is not available in epel8.
    
    We don't make a big use of pdcclient so let's replace it
    with a requests.get call.
    This commit does not manage the pagination but since the
    code raise a ValueError is the request response contains
    more than 1 result we should not need to manage the pagination.
    
    Signed-off-by: Clement Verna <cverna@tutanota.com>