Unify RHEL 8, RHEL 9 gating tests

resolves: rhbz#1967057

(cherry picked from commit 0ea9cb6a593b561dbead8224d91ea789d4db75ce)

gating.yaml

@@ -1,8 +1,10 @@
 --- !Policy
 product_versions:
+  - rhel-8
   - rhel-9
 decision_context: osci_compose_gate
 rules:
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}
   - !PassingTestCaseRule {test_case_name: xen-ci.brew-build.tier1.functional}
   - !PassingTestCaseRule {test_case_name: 3rd-esxi-esxi65.brew-build.tier1.functional}
   - !PassingTestCaseRule {test_case_name: 3rd-hyperv-2019-ci.brew-build.tier1.functional}

tests/basic-test.sh

@@ -0,0 +1,6 @@
+#!/bin/bash -
+set -e
+set -x
+
+# This test requires root to run.
+virt-what

tests/tests.yml

@@ -0,0 +1,11 @@
+- hosts: localhost
+  roles:
+  - role: standard-test-basic
+    tags:
+    - classic
+    required_packages:
+    - virt-what
+    tests:
+    - simple:
+        dir: .
+        run: ./basic-test.sh