Implement ops-hub bootstrap compatibility

tests/test_health.py

@@ -1,16 +1,13 @@
-from fastapi.testclient import TestClient
-
-
-def test_healthz(app):
-    response = TestClient(app).get("/healthz")
+def test_healthz(client):
+    response = client.get("/healthz")
 
     assert response.status_code == 200
     assert response.json()["status"] == "ok"
     assert response.json()["service"] == "core-hub"
 
 
-def test_readyz(app):
-    response = TestClient(app).get("/readyz")
+def test_readyz(client):
+    response = client.get("/readyz")
 
     assert response.status_code == 200
     assert response.json()["checks"]["database_url"] == "configured"