migrate secrets into the database

the infra version is bumped because the nginx's dhparams path has changed
and the sftp server key path has changed.

src/test/reverseproxy-test.js

@@ -5,7 +5,8 @@
 
 'use strict';
 
-var async = require('async'),
+const async = require('async'),
+    blobs = require('../blobs.js'),
     database = require('../database.js'),
     domains = require('../domains.js'),
     expect = require('expect.js'),
@@ -28,6 +29,7 @@ function setup(done) {
     async.series([
         database.initialize,
         database._clear,
+        blobs.initSecrets,
         settings.setAdminLocation.bind(null, DOMAIN_0.domain, 'my.' + DOMAIN_0.domain),
         domains.add.bind(null, DOMAIN_0.domain, DOMAIN_0, AUDIT_SOURCE),
         settings.initCache