Doc: Clusters from Scratch: Centos Stream 8 -> AlmaLinux 9

Update CfS doc from Centos Stream 8 (c8s) to AlmaLinux 9. We're using
AlmaLinux for its stability, being roughly parallel to RHEL. In trying
to update this doc to c9s, we hit a blocker with DRBD that would have
required a non-trivial amount of fiddling with source; full details in
T492.

The main updates in this rather large commit are as follows:

• Update CFS_DISTRO and CFS_VERSION.
• Update all screenshots of installation process, with some additions, e.g.,:
  • More images of partitioning/VG.
  • New root SSH checkbox not present in c8s.
• Use nmcli commands; no more ifcfg-* files in AL 9!
• Change repo from "ha" to "highavailability" (and add "resilientstorage" later in guide).
• Update command outputs; sometimes only formatting or help text.
• Explain default resource stickiness of 1 in AL9.
• pcs resource move now removes the cli- constraint automatically; no need for clear.
• Update drbd package names from 90 to 9x.
• Replace Master with Promoted in commands.
• Add interleave=true and ordered=true to dlm resource.
• Change XML config output to pcs config output in config recap appendix; we promised "no more XML" earlier in the guide.
• Update sample corosync.conf.

Signed-off-by: Reid Wahl <nrwahl@protonmail.com>