install.crowdsec.net: pygpgme install attempted (and fails) on AlmaLinux/Rocky/RHEL/CentOS Stream 8+

## Summary The `install.crowdsec.net` script tries to `yum install pygpgme` on AlmaLinux 8 (and other RHEL-family 8+ distros), which fails because `pygpgme` was a Python-2-era package and is no longer in EL8+ repositories. The install itself still completes successfully (a `WARNING:` is printed and execution continues), but the misleading error output is confusing and looks like a hard failure. ## Reproduce ```sh # On AlmaLinux 8: curl -s https://install.crowdsec.net | sudo sh ``` Output (excerpt): ``` Detected operating system as almalinux/8. ... Installing pygpgme to verify GPG signatures... ... No match for argument: pygpgme Error: Unable to find a match: pygpgme WARNING: The pygpgme package could not be installed. This means GPG verification is not possible for any RPM installed on your system. To fix this, add a repository with pygpgme. Usually, the EPEL repository for your system will have this. ... ``` Same behaviour on Rocky Linux 8/9, RHEL 8/9, CentOS Stream 8/9. ## Root cause The script *intends* to skip `pygpgme` on RHEL-family 8+ — that logic exists at the top of the script: ```sh if [ "\$os" = "ol" ] || [ "\$os" = "el" ] && [ "\$dist" -gt 7 ]; then _skip_pygpgme=1 else _skip_pygpgme=0 fi ``` But it only matches `os=ol` (Oracle Linux) or literal `os=el`. `/etc/os-release` reports `ID=almalinux`, `ID=rocky`, `ID=rhel`, `ID=centos`, never literal `el`, so all of those distros fall through to `_skip_pygpgme=0` and trigger the doomed `yum install -y pygpgme` in `finalize_yum_repo()`. ## Proposed fix Replace the `if/else` with a `case` covering the whole RHEL family: ```sh case "\$os" in ol|el|rhel|centos|almalinux|rocky) if [ "\$dist" -gt 7 ]; then _skip_pygpgme=1 else _skip_pygpgme=0 fi ;; *) _skip_pygpgme=0 ;; esac ``` Happy to open a PR if the source is in this repo (or another) — please point me at it. ## Context Originally filed against the wrong project at crowdsecurity/cs-whm-plugin#11; moving here as the script header in `install.crowdsec.net` directs reports to this repo.