Add basic smoke test

Related: rhbz#1994935

.fmf/version

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

gating.yaml

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+--- !Policy
+product_versions:
+  - rhel-9
+decision_contexts:
+  - osci_compose_gate
+rules:
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

plans/smoke.fmf

@@ -0,0 +1,7 @@
+summary: Basic smoke test
+prepare:
+  how: install
+  exclude:
+    - maven-openjdk8
+execute:
+  script: mvn dependency:get -Dartifact=junit:junit:4.12 && stat $HOME/.m2/repository/junit/junit/4.12/junit-4.12.jar