fix(common.sh): fixed cgroupDriver configuration

[Deblazz]

fix(common.sh): fixed cgroupDriver configuration to ensure broad OS compatibility in quickstart example

Description

Added explicit selection of cgroupDriver when using create_cluster() function of examples' common.sh.

I had problems running the script on fedora 42, now, by default, systemd is selected ( thus allowing compatibility with fedora ) but can be overridden in case of uncompatible distros.

To override it, explicit it this way when using scripts which use common.sh:

(e.g.)
CGROUP_DRIVER=cgroupfs ./setup.sh

[adamjensenbot]

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