Version 2.2.0 - Helm Chart and watchdog for update process

This version adds an Helm Chart to help with Kubernetes deployment and a new watchdog to allow a new update to be launched after a stucked one without manual action.

Helm Chart

This chart is not yet published to a repository but it will be documented as soon as it is done.

Update Watchdog

Previously, if the process running the update was killed, the update was not closed, preventing any further launch. You had to end the previous update by calling sirene update finish-error.

Now, if an update is running and the status was not updated for more than one hour, it will be considered as stucked, and will be automatically terminated, and the new update process will continue normally.

Full Changelog: v2.1.2...v2.2.0