Expand PPM platform support

[toph-allen]

Fixes #1720

I set out to add support for getting Rocky Linux 9 binaries from Package Manager instances, as it's binary compatible with CentOS/RHEL binaries. This was initially motivated by adding binary support for Connect instances hosted on Rocky. Along the way I went to check out /etc/os-release files from other supported distros, and made some other additions/fixes.

Connect's supported distros are listed here, and Package Manager's are available here.

Changes I made:

• Added functions to detect Rocky Linux and AlmaLinux, two CentOS/RHEL-compatible distributions, as centos8/rhel9.
• Added support for Debian. (It isn't supported by Connect but is by PPM, so it's nice for renv to support it.) Its platform function is like Ubuntu.
• Fixed support for OpenSUSE. Previously, the renv_ppm_platform_suse() function would return something like opensuse15, but the minor part of the version needs to be appended, e.g. opensuse154. Also, OpenSUSE /etc/os-release files don't always contain suse as a standalone word, so the I changed the regex used to identify this distro.
• Added support for SLES, which has different /etc/os-release files from OpenSUSE.
• Added tests for a cross-section distros (not all minor versions).

Other changes I'm considering, and would appreciate feedback on whether to include or not:

• Adding support for detecting Amazon Linux 2 as centos7. It seems to be mostly compatible (StackOverflow, Amazon docs), and I think this is the basis of Connect listing it as supported, but I'm not sure.

Code style questions:

• It looks like we previously erred on the side of giving each distro a separate function, even if for now the logic is identical to other functions. I followed this pattern with the new distros. But we could also just call e.g. renv_ppm_platform_rhel for AlmaLinux and Rocky.
• We could look for e.g. \\bsuse\\b in the ID_LIKE field instead of directly looking for the ID field.

[aronatkins]

Here is the /etc/os-issue from an amazonlinux2 container

docker run -it --rm amazonlinux:2 cat /etc/os-release

NAME="Amazon Linux"
VERSION="2"
ID="amzn"
ID_LIKE="centos rhel fedora"
VERSION_ID="2"
PRETTY_NAME="Amazon Linux 2"
ANSI_COLOR="0;33"
CPE_NAME="cpe:2.3:o:amazon:amazon_linux:2"
HOME_URL="https://amazonlinux.com/"
SUPPORT_END="2025-06-30"

[aronatkins]

Does this change (and the one in #1716) need NEWS?

[kevinushey]

LGTM!

[kevinushey]

It looks like we previously erred on the side of giving each distro a separate function, even if for now the logic is identical to other functions. I followed this pattern with the new distros. But we could also just call e.g. renv_ppm_platform_rhel for AlmaLinux and Rocky.

I'd prefer keeping these separate just for clarity, even if it means some code is duplicated here.

[toph-allen]

I'd prefer keeping these separate just for clarity, even if it means some code is duplicated here.

Yeah, agreed 👍🏻