Logging LogLevel should be handled as namespace prefix

[wdolek]

It is common to use typed ILogger<T> in .NET - this will produce category which equals to full type name, so for example ILogger<HttpClient> has category System.Net.Http.HttpClient.

Usually, this should be enough to have Debug level for HttpClient:

    "LogLevel": {
      "Microsoft": "Information",
      "System": "Warning",
      "System.Net": "Information",
      "System.Net.Http": "Debug"
    }

Yet in order to make this work, wildcards must be used like this:

    "LogLevel": {
      "Microsoft.*": "Information",
      "System.*": "Warning",
      "System.Net.*": "Information",
      "System.Net.Http.*": "Debug"
    }

I spent quite a lot of time debugging my configuration not realizing this. In addition to wildcards, I propose adding simple support of namespace prefixes as well, which is common in .NET.

Framework documentation: Logging in .NET Core and ASP.NET Core.

[normj]

PR merged and released