Add gating tests

This is a very simple test to see if we can list the packages via
the ansible dnf module.

Resolves: rhbz#1990948

gating.yaml

@@ -0,0 +1,6 @@
+--- !Policy
+product_versions:
+  - rhel-9
+decision_context: osci_compose_gate
+rules:
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

tests/tests.yml

@@ -0,0 +1,16 @@
+---
+- hosts: localhost
+  gather_facts: yes
+  roles:
+  - role: standard-test-basic
+    tags:
+    - classic
+    tests:
+    - simple:
+        dir: .
+        run: /usr/bin/ansible localhost -m dnf -a "list=installed"
+#  tasks:
+      # This is only used as part of rpm-ostree which has extensive tests
+      # and there is no point to testing it separately.
+      #      - name: true
+      #        shell: true