Added a few changes:

• Removed the kube-proxy add-on configuration to avoid the error InvalidParameterException: ConfigurationValue provided in request is not supported: Json schema validation failed with error: [$.tolerations: is not defined in the schema and the schema does not allow additional properties]
• Factorized the tolerations/taints and node labels to locals to avoid repetition and human error
• Fixed the helm_release resource to:
  • Use the alias provider (otherwise it cannot find which kubernetes config to use as there are no default helm provider)
  • Use the namespace specified for the service account (otherwise the installation won't be able to authenticate properly from the default namespace). Need to create the namespace if not existing (setting up the associated attribute to true)
  • Pass tolerations and node selector labels to the templatized helm values
  • Make the templated YAML safer by using double quote on variable (to avoid accidental implicit castings to booleans or numbers)