move provider into sysinfo

this is ideally "auto-detectable" runtime information

src/routes/provision.js

@@ -10,18 +10,18 @@ exports = module.exports = {
 
 var assert = require('assert'),
     auditSource = require('../auditsource'),
-    config = require('../config.js'),
     debug = require('debug')('box:routes/setup'),
     HttpError = require('connect-lastmile').HttpError,
     HttpSuccess = require('connect-lastmile').HttpSuccess,
     provision = require('../provision.js'),
     ProvisionError = require('../provision.js').ProvisionError,
+    sysinfo = require('../sysinfo.js'),
     superagent = require('superagent');
 
 function providerTokenAuth(req, res, next) {
     assert.strictEqual(typeof req.body, 'object');
 
-    if (config.provider() === 'ami') {
+    if (sysinfo.provider() === 'ami') {
         if (typeof req.body.providerToken !== 'string' || !req.body.providerToken) return next(new HttpError(400, 'providerToken must be a non empty string'));
 
         superagent.get('http://169.254.169.254/latest/meta-data/instance-id').timeout(30 * 1000).end(function (error, result) {

src/routes/settings.js

@@ -128,15 +128,15 @@ function getCloudronAvatar(req, res, next) {
 }
 
 function getBackupConfig(req, res, next) {
-    settings.getBackupConfig(function (error, config) {
+    settings.getBackupConfig(function (error, backupConfig) {
         if (error) return next(new HttpError(500, error));
 
         // always send provider as it is used by the UI to figure if backups are disabled ('noop' backend)
         if (!custom.spec().backups.configurable) {
-            return next(new HttpSuccess(200, { provider: config.provider }));
+            return next(new HttpSuccess(200, { provider: backupConfig.provider }));
         }
 
-        next(new HttpSuccess(200, backups.removePrivateFields(config)));
+        next(new HttpSuccess(200, backups.removePrivateFields(backupConfig)));
     });
 }