Gy k6 tweaks
Changes 2 areas for k6 tests:
- Adds a modifier to
git_ls_remote
test to reduce it's RPS to 2% of what the main RPS target is. This is due to the Git endpoints being used way less in real environments to the amount of 2% compared to normal APIs according to at least one customer. - Adds a user agent to the k6 tests to help with load balancing on new environments