feat: add log-cleanup sidecar to scheduler/worker

[thesuperzapper]

What issues does your PR fix?

• resolves add log-cleanup sidecar to scheduler/worker pods #502

What does your PR do?

• Adds a log-cleanup sidecar to the scheduler that automatically deletes old log files (by last-modified time)
• Adds the following new values:
  • scheduler
    • scheduler.logCleanup.enabled (default: true)
    • scheduler.logCleanup.resources (default: {})
    • scheduler.logCleanup.retentionMinutes (default: 21600 = 15 days)
    • scheduler.logCleanup.intervalSeconds (default: 900 = 15 minutes)
  • workers
    • workers.logCleanup.enabled (default: true)
    • workers.logCleanup.resources (default: {})
    • workers.logCleanup.retentionMinutes (default: 21600 = 15 days)
    • workers.logCleanup.intervalSeconds (default: 900 = 15 minutes)

Checklist

For all Pull Requests

• Commits are signed off
• Commits have semantic messages
• Documentation updated
• Passes ct linting

For releasing ONLY

• Chart.yaml version bumped
• CHANGELOG.md updated