Remove empty ca_certs from cloud-config.yaml

Since it is a pointer, it is always true (non-nil).

And structs are always true, so they can't be tested.

Signed-off-by: Anders F Björklund <[email protected]>

Author: afbjorklund

Diff for: pkg/cidata/cloud-config.yaml

@@ -37,6 +37,7 @@ users:
 # resolv_conf is not included here
 {{- end }}
 
+{{- if .CACerts.RemoveDefaults }}
 {{ with .CACerts }}
 ca_certs:
   remove_defaults: {{ .RemoveDefaults }}
@@ -50,6 +51,7 @@ ca_certs:
   {{- end }}
   {{- end }}
 {{- end }}
+{{- end }}
 
 {{- if .BootCmds }}
 bootcmd:

Diff for: pkg/cidata/template.go

@@ -125,6 +125,13 @@ func ExecuteTemplateCloudConfig(args *TemplateArgs) ([]byte, error) {
 	if err := ValidateTemplateArgs(args); err != nil {
 		return nil, err
 	}
+	// Remove empty CACerts struct from cloud-config output
+	if !*args.CACerts.RemoveDefaults && len(args.CACerts.Trusted) == 0 {
+		temp := *args
+		temp.CACerts.RemoveDefaults = nil
+		temp.CACerts.Trusted = nil
+		args = &temp
+	}
 	return textutil.ExecuteTemplate(cloudConfigYaml, args)
 }