andreas@nsnx:~$ ubuntu-upload-permission -a sssd
All upload permissions for sssd:

Component (main)
================
* Ubuntu Core Development Team (ubuntu-core-dev) [team]

Packagesets
===========

ubuntu-desktop:
* Ubuntu Desktop (ubuntu-desktop) [team]

ubuntu-server:
* Ubuntu Server Developers (ubuntu-server-dev) [team]

kubuntu:
* Kubuntu Developers (kubuntu-dev) [team]

You can not upload sssd to bionic, yourself.
But you can still contribute to it via the sponsorship process: https://wiki.ubuntu.com/SponsorshipProcess