feat: add perfSONAR-diagnostic-report.sh v1.0.0

[ShawnMcKee]

Summary

New read-only diagnostic collection script for remote troubleshooting of perfSONAR deployments.

New files

• perfSONAR-diagnostic-report.sh v1.0.0 — collects 12 diagnostic sections into a self-contained report file at /tmp/perfsonar-diag-<hostname>-<date>.txt
• perfSONAR-diagnostic-report.sh.sha256 — integrity checksum

Modified files

• install_tools_scripts.sh v1.0.4 → v1.0.5 — bootstrap now downloads the new script
• install-perfsonar-testpoint.md — troubleshooting section updated to reference the diagnostic report script instead of manual log collection
• CHANGELOG.md — [1.5.5] entry added

Diagnostic sections (12)

1. Host Environment (OS, kernel, memory, disk, CPU)
2. Network Configuration (IP, routes, DNS, firewall, multi-NIC)
3. SELinux & Security (mode, booleans, MCS labels)
4. Container Runtime (podman info, images, ps, inspect, exec-into checks)
5. Configuration Files (compose, node_exporter.defaults, service files)
6. Toolkit (RPM packages, native services — when applicable)
7. Endpoint Connectivity (curl tests for all 4 endpoints, SSL cert)
8. TLS / Let's Encrypt Certificates
9. Systemd Units & Timers
10. Network Tuning (sysctl, ethtool, tc qdisc, fasterdata audit)
11. Known Issue Checks (cpufreq, certbot :Z, D-Bus boolean, Initialized state, cgroup)
12. Quick Health Summary

CLI flags

--base DIR, --type TYPE, --output FILE, --no-color, --brief, --version, --help

Testing

Tested on psum01 (container deployment, RHEL 9, Podman 5.6.0). All 12 sections complete successfully. Report file generated at 748K with full diagnostic data.