* fix(package): preserve service state across upgrades
* fix(package): match legacy DEB versions in tilde form
Published prerelease packages carry ~ in the dpkg control version
(package_versions.sh maps the SemVer prerelease - to ~), so the
legacy fallback list written with dots never matched 1.0.0~rc.x and
upgrades away from those DEBs still left the service stopped (#8011).
Fix the legacy glob to the tilde form and update the contract test,
which had enshrined the dot form. Verified on Ubuntu 24.04 systemd
containers: DEB upgrade 1.0.0~rc.5 -> 1.0.1 now keeps the service
running; 1.0.0 -> 1.0.1 and 1.0.1 -> 1.0.2 marker path still pass.
* docs(package): expand /etc/default/rustfs example template
Document the commonly used RUSTFS_* settings as commented examples in
the packaged conffile and point to docs.rustfs.com.
hector