Add pydoc information
Add pydoc information

This patch adds pydoc documentaion comments to the akanda code.  The following
functions remain undocumented:

ensure_mapping
generic_to_host
host_to_generic
_update_addresses
  _get_cmd
_update_set
_alter_route
_parse_interfaces
_parse_interface
_parse_head
_parse_inet
_parse_lladdr

openstack/akanda-appliance,stackforge/akanda-appliance,dreamhost/akanda-appliance,dreamhost/akanda-appliance,openstack/akanda-appliance,stackforge/akanda-appliance