🐛 fix GINKGO_OPTS

[perdasilva]

Description of the change:
Splits the Make variable GINKGO_OPTS into an internal and external variables: GINKGO_OPTS (ext) E2E_GINKGO_OPTS (int).

Motivation for the change:
Setting GINKGO_OPTS in a different Makefile and calling this Makefile does not currently have the desired effect.
With this change build jobs have more options to affect the ginkgo run (e.g. generate test reports, etc.)

Architectural changes:

Testing remarks:

Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Bug fixes are accompanied by regression test(s)
• e2e tests and flake fixes are accompanied evidence of flake testing, e.g. executing the test 100(0) times
• tech debt/todo is accompanied by issue link(s) in comments in the surrounding code
• Tests are comprehensible, e.g. Ginkgo DSL is being used appropriately
• Docs updated or added to /doc
• Commit messages sensible and descriptive
• Tests marked as [FLAKE] are truly flaky and have an issue
• Code is properly formatted

[bentito]

/approve