Plugin shadows --version option of helm install and helm template

[jarhill0]

Both helm install and helm template support a --version option used to specify the version of a chart to install:

--version string             specify the exact chart version to install. If this is not specified, the latest version is installed

Unfortunately the current version of this package intercepts the --version argument and passes it to kubeval, which makes it impossible to give this argument to helm template:

helm-kubeval/scripts/run.sh

Lines 10 to 14 in 7476464

	case "$1" in
	--version|--help)
	$HELM_PLUGIN_DIR/bin/kubeval $1
	exit
	;;

It would be great if there were a way to pass the --version argument to helm. I think the best way to achieve this would be by supporting the "end of options" flag, which is --. Using the -- sends all arguments after it to helm without intercepting any of them.

I imagine the usage would look like:

helm kubeval myChart -- --version 1.0

This would pass the --version 1.0 argument to helm, rather than printing the kubeval version.

The current version of run.sh nearly supports this. It has an eoo variable which it checks (complete with an appropriate else case), but it never actually checks for -- or sets eoo to 1.