Use osci and tmt for gating

.fmf/version

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

gating.yaml

@@ -3,4 +3,4 @@ product_versions:
   - rhel-8
 decision_context: osci_compose_gate
 rules:
-  - !PassingTestCaseRule {test_case_name: baseos-ci.brew-build.tier1.functional}
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

plans.fmf

@@ -0,0 +1,4 @@
+discover:
+  how: fmf
+execute:
+  how: tmt

tests/smoke.fmf

@@ -0,0 +1,5 @@
+test: python3 smoke.py
+framework: shell
+require:
+- python3
+- python3-dateutil

tests/smoke.py

@@ -0,0 +1,5 @@
+from dateutil.easter import easter
+import datetime
+
+correct = datetime.date(2021,4,4)
+assert easter(2021) == correct