Modernise PackageInfo directives.•••- Add Alpine packages.
- Add missing directives to log_json.
- Drop obsolete version constraints.
- Use system-like for debian and rhel.
Invalidate the file cache when reading SSL certs.•••This fixes reading the same file when the SSL certs are reloaded
without a full rehash (e.g. via SIGUSR1 or /REHASH -ssl).
This also reverts 8f0d732e38.