Bring back upload route to keep e2e happy

let's maybe remove it in next release

src/routes/apps.js

@@ -58,6 +58,7 @@ exports = module.exports = {
     clone,
 
     downloadFile,
+    uploadFile,
 
     updateBackup,
     downloadBackup,
@@ -929,6 +930,21 @@ async function downloadBackup(req, res, next) {
     result.stream.pipe(res);
 }
 
+async function uploadFile(req, res, next) {
+    assert.strictEqual(typeof req.app, 'object');
+
+    if (typeof req.query.file !== 'string' || !req.query.file) return next(new HttpError(400, 'file query argument must be provided'));
+    if (!req.files.file) return next(new HttpError(400, 'file must be provided as multipart'));
+
+    req.clearTimeout();
+
+    const [error] = await safe(apps.uploadFile(req.app, req.files.file.path, req.query.file));
+    safe.fs.unlinkSync(req.files.file.path);
+
+    if (error) return next(BoxError.toHttpError(error));
+    next(new HttpSuccess(202, {}));
+}
+
 async function downloadFile(req, res, next) {
     assert.strictEqual(typeof req.app, 'object');