Add gating test

Related: rhbz#1858571

Signed-off-by: Honggang Li <honli@redhat.com>

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/run_tests.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+exit 0

tests/tests.yml

@@ -0,0 +1,11 @@
+- hosts: localhost
+  roles:
+    - role: standard-test-basic
+      tags:
+        - classic
+      tests:
+        - simple:
+            dir: .                                 # switch to subfolder. This parameter is REQUIRED, use `dir: .` for current folder
+            run: ./run_tests.sh                    # this is your test command, its exit code is the outcome of the test
+      required_packages:
+        - ucx