Fixing sample code to use ASP.NET Core 2.x DefaultHostBuilder to setup a host

[seprix91]

Though, creating a host from WebHostBuilder is supported approach, it sounds 1.x though. Took liberty to upgrade sample to use more compact static CreateDefaultBuilder method

[dnfclas]

All CLA requirements met.

[scottaddie]

@seprix91 We'll need to display both 1.x and 2.x snippets in this doc. That is accomplished by using tabs. See the following doc for an example of tabs and the syntax: https://docs.microsoft.com/aspnet/core/security/authentication/identity-configuration. Is this something you have time to do? If not, I can take care of it.

[seprix91]

@scottaddie Thanks for the clarification. yes, i can do that.

[scottaddie]

@seprix91 Thanks for your help! Let me know if you have any questions.

[guardrex]

Thanks @seprix91 for raising this issue/PR. I'm going to close here and perform user experience update on the topic along with the 2.0 sample update. #5315

Thanks again! 🚀