automation-controller: automation-controller-container: automation-controller: CUSTOM_VENV_PATH setting provides filesystem path-existence oracle on control pod

StringListPathField.tointernalvalue calls os.path.exists on unbounded user-supplied paths. 200 vs 400 response reveals existence of arbitrary absolute paths on the controller-web pod. Tenant superuser can confirm /etc/tower/SECRETKEY, k8s service-account token, receptor sockets, ConfigMap mount...