It's default values in case user wouldn't provide URLs to Media Services and OAuth sever.

I looked through ServiceManagementSettings.php so it uses Resources::SERVICE_MANAGEMENT_URL value in case user wouldn’t provide endpoint URI.

const SERVICE_MANAGEMENT_URL = 'https://management.core.windows.net';

I do the same in https://github.com/VladimirTsyshnatiy/ykennor-786/blob/ms-connect/WindowsAzure/Common/Internal/MediaServicesSettings.php