helm: add kube-version and api-versions on CLI args

It makes sense to add that as a CLI args since you could use one single
kustomization file/helm chart for multiple clusters. Also it's easier to
have those on the CLI if the user has some kind of tooling that will end
up calling kustomize and that could pass those (i.e.: ArgoCD is doing
that for Helm so it could do that for Kustomize as well that will end up
calling Helm as well).

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@ledger.fr>

api/internal/builtins/HelmChartInflationGenerator.go

@@ -53,6 +53,15 @@ func (p *HelmChartInflationGeneratorPlugin) Config(
 	if h.GeneralConfig().HelmConfig.Command == "" {
 		return fmt.Errorf("must specify --helm-command")
 	}
+
+	// CLI args takes precedence
+	if h.GeneralConfig().HelmConfig.KubeVersion != "" {
+		p.HelmChart.KubeVersion = h.GeneralConfig().HelmConfig.KubeVersion
+	}
+	if len(h.GeneralConfig().HelmConfig.ApiVersions) != 0 {
+		p.HelmChart.ApiVersions = h.GeneralConfig().HelmConfig.ApiVersions
+	}
+
 	p.h = h
 	if err = yaml.Unmarshal(config, p); err != nil {
 		return

api/types/pluginconfig.go

@@ -4,8 +4,10 @@
 package types
 
 type HelmConfig struct {
-	Enabled bool
-	Command string
+	Enabled     bool
+	Command     string
+	ApiVersions []string
+	KubeVersion string
 }
 
 // PluginConfig holds plugin configuration.