Returns the Helm chart archive located at the given URI (can be either an http(s) address or a file path).

Searches for the value file with the given name in the chart and returns its raw content.

Renders the content of the given Helm chart archive: - helmChart: the Gloo helm chart archive - overrideValues: value to override the chart defaults.

Filters out any CRD from each manifest.

Returns only non-empty manifests.

Filters out NOTES.txt files.

Filters out any pre-install from each manifest.

Filters out anything but pre-install.

We need to define this ourselves, because if we unmarshal into `apiextensions.CustomResourceDefinition` we don't get the ObjectMeta (in the yaml they are nested under `metadata`, but the k8s struct has them as top level fields...).

This type represents a function that can be used to filter and transform a list of manifests.

use to overwrite / modify values file before passing to helm.