message GitRepoVolumeSource {
  // repository is the URL
  optional string repository = 1;

  // revision is the commit hash for the specified revision.
  // +optional
  optional string revision = 2;

  // directory is the target directory name.
  // Must not contain or start with '..'.  If '.' is supplied, the volume directory will be the

* Utilizes Gateway injection, simplifying upgrades, allowing gateways to run in any namespace, and avoiding repeating config for sidecars and gateways.
* Published to official Istio Helm repository.
* Single chart for all gateways (Ingress, Egress, East West).

#### General concerns

For a smooth migration, the resource names and `Deployment.spec.selector` labels must match.