expand logging in the get-passes.py error handling case

maybe will reveal some useful info some day

nixos/tests/test_privatestorage.py

@@ -118,8 +118,9 @@ def test(
     except:
         # Dump the fake Stripe API server logs, too, since the error may arise
         # from a PaymentServer/Stripe interaction.
-        code, output = api_stripe_com.execute('journalctl -u api.stripe.com')
-        api_stripe_com.log(output)
+        for node, unit in [(api_stripe_com, "api.stripe.com"), (issuer, "zkapissuer")]:
+            code, output = node.execute(f'journalctl -u {unit}')
+            node.log(output)
 
         raise