Update tests and gating.yaml

gating.yaml

@@ -5,3 +5,11 @@ decision_context: bodhi_update_push_stable
 subject_type: koji_build
 rules:
   - !PassingTestCaseRule {test_case_name: fedora-ci.koji-build.tier0.functional}
+
+# RHEL
+--- !Policy
+product_versions:
+  - rhel-*
+decision_context: osci_compose_gate
+rules:
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

tests/upstream-tests.fmf

@@ -2,3 +2,10 @@ summary: Upstream tests
 component: perl-XML-LibXML
 require: perl-XML-LibXML-tests
 test: /usr/libexec/perl-XML-LibXML/tests
+enabled: true
+tag:
+  - rhel-buildroot
+adjust:
+  - enabled: false
+    when: distro < rhel-10 or distro < centos-stream-10
+    continue: false