e2e: run tests in two separate jobs

[mmatczuk]

We could run the e2e tests in less time using shading. The workflow will be bit complicated, but the gist of it is as follows:

• Use one job to build and save all conatiners
• Use two worker e2e jobs each running setups % n = X
• I suggest to use 2 workers odd and even
• One needs to use a common seed