export a connection property from docker.js

src/routes/test/apps-test.js

@@ -16,7 +16,7 @@ var appdb = require('../../appdb.js'),
     config = require('../../config.js'),
     constants = require('../../constants.js'),
     database = require('../../database.js'),
-    docker = require('../../docker.js'),
+    docker = require('../../docker.js').connection,
     expect = require('expect.js'),
     fs = require('fs'),
     hock = require('hock'),
@@ -25,7 +25,6 @@ var appdb = require('../../appdb.js'),
     js2xml = require('js2xmlparser'),
     net = require('net'),
     nock = require('nock'),
-    os = require('os'),
     paths = require('../../paths.js'),
     redis = require('redis'),
     request = require('superagent'),