Update for ConnMan 0.79 API changes
* Use Manager.GetServices method instead of Manager.Services property
* Use Manager.GetTechnologies / Technology.Powered instead of
Manager.EnabledTechnologies method
* Use Technology.Powered property instead of Manager.EnableTechnology
and Manager.DisableTechnology methods
* Use Technology.Scan method instead of Manager.RequestScan method
* Listen for ServicesAdded, ServicesRemoved, TechnologyAdded and
TechnologyRemoved signals instead of monitoring the old Services
and EnabledTechnologies properties
Also remove unused code relating to the old API.
10 files changed
