⚠️ Add "owner" and "contributors" columns to application import CSV format.

[mansam]

Adds two fields to the import CSV immediately before tags. One is for the Owner and should be empty or contain a single value in the form 'John Doe [email protected]'. The second is for contributors, and should be empty or a list of one or more values in the previous format, separated by commas. As this would be a comma-delimited field within a CSV, the whole value should be surrounded by quotes. This breaks compatibility with any existing import CSVs since it adds columns in the middle (necessary since the number of tags is unbounded and as such the tag list must come last).

Fixes #538

@jortel Do you think we can get away with adding this to migration 11, or do you think I should create a new one?

[aufi]

LGTM, just tests need to be updated - https://github.com/konveyor/tackle2-hub/tree/main/test/api/importcsv

[aufi]

@mansam I think Stakeholders created by CSV import test might need to be cleaned-up after the CSV import test (to not fail other tests).

[fabianvf]

Why did this merge with failing CI?

For future reference, we should merge the API test updates and the PR that breaks CI simultaneously. This change broke the integration CI across all repos. We can make changes to the API tests repo (https://github.com/konveyor/go-konveyor-tests) and ensure it works in this branch by adding

        Go tests PR: <PR number>

to a PR description, which will make it run against the proposed changes to ensure the CI stays green across the org as we merge these changes.