Adding license and removing errant default on the hosts option

lib/ansible/modules/extras/coordination/znode

@@ -1,4 +1,21 @@
 #!/usr/bin/python
+# Copyright 2015 WP Engine, Inc. All rights reserved.
+#
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+
 DOCUMENTATION = """
 ---
 module: znode
@@ -7,7 +24,6 @@ options:
     hosts:
         description:
             - A list of ZooKeeper servers (format '[server]:[port]').
-        default: localhost:2181
         required: true
     path:
         description:
@@ -35,6 +51,7 @@ options:
         required: false
 requirements:
     - kazoo >= 2.1
+author: "Trey Perry (@treyperry)"
 ---
 """