Remove 'type' parameter for policy creation
Remove 'type' parameter for policy creation

The type parameter is not necessary now.

Change-Id: I132c4c4b5d1982dc8195fa8d74163a8fdbe24f8a

stackforge/python-senlinclient,stackforge/python-senlinclient,openstack/python-senlinclient,openstack/python-senlinclient