New option --operator-csv-modifications-url

[MartinBasti]

Option can pass URL to JSON file with modifications to operator CSV file.

Can be used only with --isolated option

• CLOUDBLD-3976

Signed-off-by: Martin Bašti mbasti@redhat.com

Maintainers will complete the following section

• [x] Commit messages are descriptive enough
• [x] Code coverage from testing does not decrease and new code is covered
• [n/a] JSON/YAML configuration changes are updated in the relevant schema
• [n/a] Pull request has a link to an osbs-docs PR for user documentation updates

[rcerven]

code looks good

[rcerven]

add some test for those errors in cli

[MartinBasti]

Tests added

[MartinBasti]

RN:

• New option --operator-csv-modifications-url to allow modifications to operator CSV file for isolated builds