Log current working directory when starting Ert

[berland]

Issue
Resolves human log parsing issue.

Approach
➕

• PR title captures the intent of the changes, and is fitting for release notes.
• Added appropriate release note label
• Commit history is consistent and clean, in line with the contribution guidelines.
• Make sure unit tests pass locally after every commit (git rebase -i main --exec 'just rapid-tests')

When applicable

• When there are user facing changes: Updated documentation
• New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• Large PR: Prepare changes in small commits for more convenient review
• Bug fix: Add regression test for the bug
• Bug fix: Add backport label to latest release (format: 'backport release-branch-name')

[codspeed-hq]

CodSpeed Performance Report

Merging #10649 will not alter performance

_{Comparing berland:log_cwd (75a85f5) with main (15f6602)}

Summary

✅ 25 untouched benchmarks

[andreas-el]

💯

[andreas-el]

📣 💯