Make it possible to connect to ADB running on other computers.

lib/roles/device/support/adb.js

@@ -8,7 +8,10 @@ var promiseutil = require('../../../util/promiseutil')
 module.exports = syrup.serial()
   .define(function(options) {
     var log = logger.createLogger('device:support:adb')
-    var adb = adbkit.createClient()
+    var adb = adbkit.createClient({
+      host: options.adbHost
+    , port: options.adbPort
+    })
     adb.Keycode = adbkit.Keycode
 
     function ensureBootComplete() {