v2.1.30

Commits

• d66ef8f release: 2.1.30
• b85d37b test(F-964): a stopping backend heals nothing either
• 17f6a1d test(F-964): a stop that lands after the round's listing still stops the relaunch
• dc68ed4 docs(F-964): changelog, design 2.8, runbook playbook and navmap for the exit relaunch and the Chrome log
• 8f614c3 test(F-964): kill a real fleet Chrome by its own pid and see it relaunched with a new log
• 75d443d refactor(F-964): relaunch_exited takes the options, instance and diagnostics it reads
• d6b787e fix(F-964): relaunch default and fleet when they exit, and have Chrome keep its own log