workflow: add smoke test that runs unit tests as user

.github/workflows/test.yml

@@ -73,3 +73,16 @@ jobs:
           run: |
             OSBUILD_TEST_STORE="${{ env.OSBUILD_TEST_STORE }}" \
             tox -e "py36" -- ${{ env.TEST_WORKERS }} test.run.test_assemblers
+
+  # Thissmoke test runs the unit tests directly on the runner and as a
+  # normal user - it is fast (1min) and should detect obvious issues
+  # (like from pr#1942)
+  unittests_as_user_smoke:
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
+    - name: "Run as user on default runer"
+      run: |
+        # depsolve tests tend to be slow but are easy to parallize
+        pytest -n 16
+