* Changed type of 'details' argument to bool on ecs_service_facts module.
* Changed type of 'autostart' argument to bool on virt_* modules.
* Changed types of 'autoconnect' and 'stp' argument to bool on nmcli module.
('create_connection_bridge(self)' and 'modify_connection_bridge(self)' are not implemented yet?)
* Added conversion of 'value' argument when 'vtype' is boolean on debconf module.
* add a new modify command
for now, allows adding or modifying hosts in the dhcp subsystem
* fix some pep8 things that escaped
* add modify in the list in the doc
* added mention of adding modify in version 2.1
* handle the test mode case for modify
* modify the code for finer check mode support
