Basepath is removed from template but is needed by UserSecrets

[Anderman]

see aspnet/Configuration#295, aspnet/Templates#269

public static class ConfigurationExtensions
    {
        /// <summary>
        /// Adds the user secrets configuration source.
        /// </summary>
        /// <param name="configuration"></param>
        /// <returns></returns>
        public static IConfigurationBuilder AddUserSecrets(this IConfigurationBuilder configuration)
        {
            if (configuration == null)
            {
                throw new ArgumentNullException(nameof(configuration));
            }

            if (string.IsNullOrEmpty(configuration.GetBasePath()))
            {
                throw new InvalidOperationException(Resources.FormatError_MissingBasePath(
                    configuration.GetBasePath(),
                    typeof(IConfigurationBuilder).Name,
                    "BasePath"));
            }

            var secretPath = PathHelper.GetSecretsPath(configuration.GetBasePath());
            return configuration.AddJsonFile(secretPath, optional: true);
        }

[Anderman]

Sorry, I just tested this in the latest dev branches and it works fine