kola: add openvswitch in hugetlbfs group test

openvswitch %pre scriptlet adds the openvswitch user to the hugetblfs group. Since %pre runs
without `set -e` by default the failures are ignored resulting in worker nodes that do not
come online during a cluster install. This seems to be happening on only RHCOS based on RHEL
9.2 on ppc64le.

These errors are showing up during the rpm-ostree compose:

14:30:05  openvswitch3.1.prein: usermod.rpmostreesave: /etc/passwd.6: lock file already used
14:30:05  openvswitch3.1.prein: usermod.rpmostreesave: cannot lock /etc/passwd; try again later.
`:

xref: coreos/fedora-coreos-tracker#1250

tests/kola/files/openvswitch-hugetlbfs-groups

@@ -0,0 +1,13 @@
+#!/bin/bash
+## kola:
+##   exclusive: false
+##   architectures: "x86_64 ppc64le"
+##   description: Verify openvswitch user is in the hugetlbfs group.
+
+set -xeuo pipefail
+
+. $KOLA_EXT_DATA/commonlib.sh
+
+if ! sudo getent group hugetlbfs | grep openvswitch; then
+  fatal "openvswitch user is not in hugetlbfs group"
+fi