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/apptask-test.js

@@ -9,6 +9,7 @@ var appdb = require('../appdb.js'),
     apps = require('../apps.js'),
     apptask = require('../apptask.js'),
     async = require('async'),
+    blobs = require('../blobs.js'),
     database = require('../database.js'),
     domains = require('../domains.js'),
     expect = require('expect.js'),
@@ -99,6 +100,7 @@ describe('apptask', function () {
         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),
             userdb.add.bind(null, ADMIN.id, ADMIN),