Add FMF gating test

.fmf/version

@@ -0,0 +1 @@
+1

gating.yaml

@@ -0,0 +1,14 @@
+--- !Policy
+product_versions:
+  - fedora-*
+decision_context: bodhi_update_push_stable
+rules:
+  - !PassingTestCaseRule {test_case_name: fedora-ci.koji-build.tier0.functional}
+
+--- !Policy
+product_versions:
+  - rhel-8
+  - rhel-9
+decision_context: osci_compose_gate
+rules:
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

plans/upstream.fmf

@@ -0,0 +1,7 @@
+discover:
+  how: fmf
+  repository: https://github.com/martinpitt/umockdev
+  # FIXME: get rid of the hardcoding: https://github.com/psss/tmt/issues/585
+  ref: "0.17.10"
+execute:
+  how: tmt