We all agreed on the list that the ansible module common module snippet, since…

We all agreed on the list that the ansible module common module snippet, since it's dynamically embedded in modules on the fly, should
be a BSD licensed snippet so that it's ok to write proprietary modules.  The actual license of Ansible (GPLv3) or any modules
written for ansible (any) do not change.

lib/ansible/module_common.py

-# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
+# This code is part of Ansible, but is an independent component.
+# This particular file snippet, and this file snippet only, is BSD licensed.
+# Modules you write using this snippet, which is embedded dynamically by Ansible
+# still belong to the author of the module, and may assign their own license
+# to the complete work.
+# 
+# Copyright (c), Michael DeHaan <michael.dehaan@gmail.com>, 2012-2013
+# All rights reserved.
 #
-# This file is part of Ansible
+# Redistribution and use in source and binary forms, with or without modification, 
+# are permitted provided that the following conditions are met:
 #
-# 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.
+#    * Redistributions of source code must retain the above copyright 
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright notice, 
+#      this list of conditions and the following disclaimer in the documentation 
+#      and/or other materials provided with the distribution.
 #
-# 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.
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
+# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 
+# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
-# You should have received a copy of the GNU General Public License
-# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 
 REPLACER = "#<<INCLUDE_ANSIBLE_MODULE_COMMON>>"
 REPLACER_ARGS = "<<INCLUDE_ANSIBLE_MODULE_ARGS>>"