tk env list throws error if environments/envx/sub/main.jsonnet exists

[strowi]

Hi,

noticed today after some time spent debugging... if there is a a environments/kafka+kafka/strimzi/main.jsonnet in an environment containing a main.jsonnet tk env list` throws an error like this:

 evaluating jsonnet in path 'environments/kafka+kafka/strimzi/main.jsonnet': RUNTIME ERROR: Field does not exist: ingress
  /tmp/tanka/environments/kafka+kafka/strimzi/kafka-ui.libsonnet:27:67-84  
  Field "KAFKA_CLUSTERS_0_BOOTSTRAPSERVERS" 
  Field "secret"  
  Field "envs"  
  Field "values"  
  /tmp/tanka/vendor/github.com/grafana/jsonnet-libs/tanka-util/helm.libsonnet:46:23-67 thunk <chartData> from <function <anonymous>>
  /tmp/tanka/vendor/github.com/grafana/jsonnet-libs/tanka-util/helm.libsonnet:48:21-30 thunk from <function <anonymous>>
  /tmp/tanka/vendor/github.com/grafana/jsonnet-libs/tanka-util/k8s.libsonnet:43:7-13 thunk from <function <anonymous>>
  /tmp/tanka/vendor/github.com/grafana/jsonnet-libs/tanka-util/k8s.libsonnet:13:21-27  thunk from <function <anonymous>>
  <std>:31:26-27  thunk from <function <anonymous>>
  ...
  <std>:32:16-27  function <anonymous>
  <std>:1613:8-22 function <anonymous>
  <std>:1618:20-35  thunk from <function <anonymous>>
  <std>:1605:10-11  function <isContent>
  <std>:1618:10-36  function <anonymous>
  <std>:(1615:34)-(1619:6)  
  <std>:(1615:34)-(1619:6)  
  /tmp/tanka/environments/kafka+kafka/strimzi:(5:3)-(28:4) function <noDataEnv>
  /tmp/tanka/environments/kafka+kafka/strimzi:30:1-16  $
  During evaluation 

This is environments/kafka+kafka/main.jsonnet:

(import '_globals/main.jsonnet') +
(import './strimzi/main.jsonnet') +
(import './secrets.libsonnet') +
(import './config.libsonnet') +

{
  _config+:: {},
}

Renaming the strimzi/main.jsonnet fixed the error.