Rewrite: rewrites env config repo and commits application cue files

We can build upon this tool to implement version to version migration logic.

Change-Id: I6066f565f118ca44ca3ce7a0ac7522258958cf25
diff --git a/core/installer/tasks/dns.go b/core/installer/tasks/dns.go
index 65ef787..27e044d 100644
--- a/core/installer/tasks/dns.go
+++ b/core/installer/tasks/dns.go
@@ -50,7 +50,7 @@
 		if err != nil {
 			return err
 		}
-		return r.Atomic(func(r installer.RepoFS) (string, error) {
+		return r.Do(func(r installer.RepoFS) (string, error) {
 			{
 				out, err := r.Writer("dns-zone.yaml")
 				if err != nil {