Rename binary attachment_service -> storage_controller (#7042)

## Problem

The storage controller binary still has its historic
`attachment_service` name -- it will be painful to change this later
because we can't atomically update this repo and the helm charts used to
deploy.

Companion helm chart change:
https://github.com/neondatabase/helm-charts/pull/70

## Summary of changes

- Change the name of the binary to `storage_controller`
- Skipping renaming things in the source right now: this is just to get
rid of the legacy name in external interfaces.

---------

Co-authored-by: Arpad Müller <arpad-m@users.noreply.github.com>

control_plane/src/attachment_service.rs

@@ -34,7 +34,7 @@ pub struct AttachmentService {
     client: reqwest::Client,
 }
 
-const COMMAND: &str = "attachment_service";
+const COMMAND: &str = "storage_controller";
 
 const ATTACHMENT_SERVICE_POSTGRES_VERSION: u32 = 16;
 

control_plane/src/local_env.rs

@@ -232,7 +232,7 @@ impl LocalEnv {
         // run from the same location as neon_local.  This means that for compatibility
         // tests that run old pageserver/safekeeper, they still run latest attachment service.
         let neon_local_bin_dir = env::current_exe().unwrap().parent().unwrap().to_owned();
-        neon_local_bin_dir.join("attachment_service")
+        neon_local_bin_dir.join("storage_controller")
     }
 
     pub fn safekeeper_bin(&self) -> PathBuf {