sig#779 - Enable configMap to seed test data

[evegufy]

Description

Enable helm chart to seed test data with configmap and move default seeding path and processidentity userid out of values file, into migrations job, as changing those values isn't intuitive.

Example for configmap:

apiVersion: v1
kind: ConfigMap
metadata:
  name: example-config
  namespace: {{ .Release.Namespace }}
data:
  addresses.test.json: |-
    [
      {
        "id": "b4db3945-19a7-4a50-97d6-e66e8dfd04fc",
        "date_created": "2022-03-24 18:01:33.306000 +00:00",
        "date_last_changed": "2022-03-24 18:01:33.306000 +00:00",
        "city": "Munich",
        "region": null,
        "streetadditional": null,
        "streetname": "Street",
        "streetnumber": "1",
        "zipcode": "00001",
        "country_alpha2code": "DE"
      }
    ]
  companies.test.json: |-
    [
      {
        "id": "2dc4249f-b5ca-4d42-bef1-7a7a950a4f88",
        "date_created": "2022-03-24 18:01:33.306000 +00:00",
        "business_partner_number": "BPNL00000003CRHL",
        "name": "CX-Test-Access",
        "shortname": "CX-Test-Access",
        "company_status_id": 2,
        "address_id": "b4db3945-19a7-4a50-97d6-e66e8dfd04fe",
        "self_description_document_id": "f90962ee-a358-4381-8947-c56268ff32c7"
      }
    ]

Additional Information

analog change as for portal-backend

relates to #205 (comment)