fix up crypto services

migrations/021-config-version-id.js

@@ -0,0 +1,15 @@
+var db = require('./db')
+
+exports.up = function (next) {
+  var sql = [
+    'alter table devices add column user_config_id int',
+    `ALTER TABLE devices ADD CONSTRAINT user_config_id
+    FOREIGN KEY (user_config_id)
+    REFERENCES user_config (id)`
+  ]
+  db.multi(sql, next)
+}
+
+exports.down = function (next) {
+  next()
+}