Deploy beta webapp with Ubuntu 16.04 Xenial AMI

When working on https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/7993 we found out that the deploy-tools are not compatible with Ubuntu Xenial and deployment of a new version of Gitter webapp fails.

As a part of this issue we are going to:

Edited by Tomas Vik (OOO back on 2026-04-07)