Add support for helm --no-hooks flag

This commit adds the `skipHooks` option to the helm chart support in order
to  expose the --no-hooks flag introduced to Helm in [1].

Using Kustomize to inflate a Helm chart would in some situations result in
different results than using `helm install`. This is because `helm
template`, by default, will render chart tests in the `templates/test`
directory, which can lead to undesired resources in the output.

See [2] for additional discussion.

[1]: https://github.com/helm/helm/pull/6444
[2]: https://github.com/helm/helm/issues/6443

Signed-off-by: Lars Kellogg-Stedman <lars@oddbit.com>

plugin/builtin/helmchartinflationgenerator/HelmChartInflationGenerator.go

@@ -287,6 +287,9 @@ func (p *HelmChartInflationGeneratorPlugin) templateCommand() []string {
 	if p.IncludeCRDs {
 		args = append(args, "--include-crds")
 	}
+	if p.SkipHooks {
+		args = append(args, "--no-hooks")
+	}
 	return args
 }