Separate kubernetes integration tests resource groups

What does this MR do?

Fixes the resource groups for the kubernetes integration tests so that each test job uses a separate group, otherwise tests would wait for each other instead of each other on a branch level.

Why was this MR needed?

To bring the tests concurrency to it's intended level.

What's the best way to test this MR?

Pipeline should pass, tests should not wait for each other.

Screenshot of the jobs being run in parallel:

What are the relevant issue numbers?