Update AndroidGCMNotification.php

There is a last problem with MultiCurl and Windows, form Android GCM notifications.
To complete the issue https://github.com/richsage/RMSPushNotificationsBundle/issues/31, and the PR https://github.com/richsage/RMSPushNotificationsBundle/pull/54, I added the deactivation of peer verification, like in https://github.com/richsage/RMSPushNotificationsBundle/blob/master/Service/OS/AndroidNotification.php#L75

Hope that helps :)