[services] Use comm-lib aws in Tunnelbroker

Summary:
Main part of ENG-4292.
Used comm-lib in Tunnelbroker and updated imports.

Depends on D10443

Test Plan: Tunnelbroker compiles.

Reviewers: kamil, michal

Reviewed By: kamil, michal

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D10444