E2E tests - Parallel Run and Improve test Isolation

[jpnovais]

Description

End2End tests shall refactored to:

• allow them to run in parallel and
• have better isolation

Refactor Suggestions

One pinpoint at the moment is that we need to configure loads of environment variables in multiple files and know them by heart. This does not scale well and is error-prone.

Alternatively, we can he a global setup helper(s) for the test setup, that is responsible:

• provide the overall configs: l1-endpoint, l2-endpoint, smart contract address etc
• create l1/l2 accounts on the fly and fund them from whale accounts in the genesis

Motivation

• Simulate Real-World Scenarios: e.g Coordinator & Message anchoring will benefit from being restarted when other things are happening. This is like in production
• Speed up CI times
• Shift-Left - Faster feedback loop - by reducing e2e times developers are more likely to run them locally.

Acceptance criteria

• All the tests suites run in parallel, including the coordinator-restart