Update call to generate-tests.

test/utils/shippable/integration.sh

@@ -48,4 +48,8 @@ pip list
 
 source hacking/env-setup
 
-test/utils/shippable/modules/generate-tests "${this_module_group}" --verbose | /bin/bash -eux
+test/utils/shippable/modules/generate-tests "${this_module_group}" --verbose --output /tmp/integration.sh >/dev/null
+
+if [ -f /tmp/integration.sh ]; then
+    /bin/bash -eux /tmp/integration.sh
+fi