Enable portal helm chart to work with SSI DIM Wallet Stub

[evegufy]

Description

This issue is the result of the discussion here eclipse-tractusx/tractus-x-umbrella#197 (comment)

Background: according the currently implemented concept, the did document is only to be located in portal database (and accessible via portal-backend api), that's the reason why the portal doesn't work out of the box with ssi-dim-wallet-stub, which isn't hosted unter portal-backend domain.

One could think of doing a change to the portal helm chart, essentially providing an option to maintain the entire did document address (domain and path) in the values file, with the exception to the /did.json at the end, which comes from the portal-backend code. IMPORTANT: the default value for the did document baselocation should still be portal-backend address + did document path see in order to follow the implemented concept.

Acceptance Criteria

• did document baselocation still defaults to portal-backend address + did document path
• in the values.yaml, a parameter dim.didDocumentAddress was introduced which is enabled in the jobs and deployments which currently contain the did document baselocation
• only if the dim.didDocumentAddress is filled, it is used else defaulting to current logic (portal-backend address + did document path)
• install comments were added to explain this logic (only fill if you want to differ from the default portal-backend address + did document path)
• one could also move the didDocumentPath into the jobs and deployments because enabling the option to change that value makes only limited sense considering implementation

Additional Information

detected in v2.3.0

[evegufy]

please checkout from the rc branch https://github.com/eclipse-tractusx/portal/tree/release-candidate and raise PR back to it.