Context:

For multi tenancy, there are a few new env vars that need set:

• we need to set the baseURL for identity as this is required to retrieve tenant authorizations for a give user token. This was added to Optimize with OPT-7249 and needs to be added to our helm charts as well. 
• multi tenancy enabled flag (defaults to false)
• optional: C8 tenant auth cache settings (though they should have reasonable defaults)

Documentation of this will be handled with OPT-7250

Helm ticket: https://github.com/camunda/camunda-platform-helm/issues/899 

AT:

• Optimize helm chart sets identity baseURL 
• Optimize helm chart sets multi tenancy enabled flag - all components will default this to false
• Optimize helm chart sets cache settings if required