fix templater: Don't template default.yml files

After the change from #84 default variable files with the '.yml'
extension got templated as resource set templates accidentally.

This resolves the issue by moving the list reserved default file names
to a common place and reusing it in both the templater and context pkg.

This fixes #85

1 files changed, 4 insertions, 2 deletions

diff --git a/templater/templater.go b/templater/templater.go
index 4a0c8e7d8d8a..f6878d3dfa03 100644
--- a/templater/templater.go
+++ b/templater/templater.go
@@ -186,8 +186,10 @@ func templateFuncs() template.FuncMap {
 
 // Checks whether a file is a resource file (i.e. is YAML or JSON) and not a default values file.
 func isResourceFile(f os.FileInfo) bool {
-	if f.Name() == "default.json" || f.Name() == "default.yaml" {
-		return false
+	for _, defaultFile := range util.DefaultFilenames {
+		if f.Name() == defaultFile {
+			return false
+		}
 	}
 
 	return strings.HasSuffix(f.Name(), "yaml") ||