Add tenant osb profile to x-osb-cmdb metadata

[gberche-orange]

Expected behavior

• As an osb-cmdb marketplace service author
• In order to expect relevant metadata from CF or K8S tenants (see https://github.com/orange-cloudfoundry/paas-templates/issues/455#issuecomment-808201505)
• I need a field to discover the tenant OSB profile through a brokered_service_context_platform field within the x-osb-cmdb.labels metadata matching the OSB api context plaform field i.e. cloudfoundry or kubernetes
• and I need default empty values for both profiles

• For cloudfoundry platforms
  • parameters.x-osb-cmdb.labels.brokered_service_context_organization_guid
  • parameters.x-osb-cmdb.labels.brokered_service_context_space_guid
  • parameters.x-osb-cmdb.labels.brokered_service_originating_identity_user_id
  • parameters.x-osb-cmdb.annotations.brokered_service_context_spaceName
  • parameters.x-osb-cmdb.annotations.brokered_service_context_organizationName
  • parameters.x-osb-cmdb.annotations.brokered_service_context_instanceName
• For kubernetes platforms
  • parameters.x-osb-cmdb.labels.brokered_service_originating_identity_uid
  • parameters.x-osb-cmdb.labels.brokered_service_context_namespace
  • parameters.x-osb-cmdb.annotations.brokered_service_originating_identity_username

Observed behavior

No such field is yet available

Affected release

Reproduced on version x.y
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