client: log index.json upload only when verbose

I mean the user expects that we know what archives, fidx or didx, are
in a backup, so this is internal info and should not be logged by
default

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

src/bin/proxmox-backup-client.rs

@@ -1137,7 +1137,7 @@ async fn create_backup(
         .map_err(|err| format_err!("unable to format manifest - {}", err))?;
 
 
-    println!("Upload index.json to '{}'", repo);
+    if verbose { println!("Upload index.json to '{}'", repo) };
     client
         .upload_blob_from_data(manifest.into_bytes(), MANIFEST_BLOB_NAME, true, false)
         .await?;