Gating changes

- Common gating.yaml allowing all rhel- versions
- CS repo with tests

gating.yaml

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

plan.fmf

@@ -11,7 +11,7 @@ environment:
 discover:
   - name: tests_python
     how: shell
-    url: https://src.fedoraproject.org/tests/python.git
+    url: https://gitlab.com/redhat/centos-stream/tests/python.git
     tests:
     - name: smoke
       path: /smoke