Technical Maintenance - old connection to keycloak

[jjeroch]

Update helm chart references which seem to connect (based on previous flow) still to the keycloak db.
Ideally this shouldn't be needed anymore.

1st Analysis needed by Backend & DevOps
2nd clean-up

Impacted files:

• portal/charts/portal/templates/deployment-backend-administration.yaml

  Line 98 in 85ce3ac

  - name: "DATABASEACCESS__KEYCLOAK__CONNECTIONSTRING"

• portal/charts/portal/templates/deployment-backend-notification.yaml

  Line 87 in 85ce3ac

  - name: "DATABASEACCESS__KEYCLOAK__CONNECTIONSTRING"

Reference why this connection was added

In the early stages of the project (even before we defined the portal-db-schema through the Entity framework), we once implemented an endpoint that went directly to the Keycloak-db for user search. However, with the introduction of the Portal schema, it became redundant and has already been removed for a long time.