Fix aggregator path in stress test

[sfauvel]

Content

Aggregator configuration was not updated when implementing #2380.

This PR

• fix paths use be the aggregator in stress test:
  • a Ledger file is added to the cardano DB
  • the aggregator is build with the root path and not the immutable path
• handle status code 550 as the registration round not open (see Error messages as warning in signer #2381)
• upload artifacts in CI to help debugging

Pre-submit checklist

• Branch
  • Tests are provided (if possible)
  • Crates versions are updated (if relevant)
  • CHANGELOG file is updated (if relevant)
  • Commit sequence broadly makes sense
  • Key commits have useful messages
• PR
  • All check jobs of the CI have succeeded
  • Self-reviewed the diff
  • Useful pull request description
  • Reviewer requested
• Documentation
  • Update README file (if relevant)
  • Update documentation website (if relevant)
  • Add dev blog post (if relevant)
  • Add ADR blog post or Dev ADR entry (if relevant)
  • No new TODOs introduced

Comments

Issue(s)

Closes #2408

[github-actions]

Test Results

    3 files  ±0     57 suites  ±0   11m 49s ⏱️ +16s
1 856 tests ±0  1 856 ✅ ±0  0 💤 ±0  0 ❌ ±0 
2 318 runs  ±0  2 318 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 8dd3b7e. ± Comparison against base commit 0b411ea.

♻️ This comment has been updated with latest results.

[dlachaume]

LGTM 👍