Remove IDs use placeholders

[kengaderdus]

Remove IDs use placeholders

We're replacing all real GUIDs with visibly fakes ones or placeholders or replacing existing placeholders with easy to read ones

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Summary of the changes (Less than 80 chars)

Description

{Detail}

Fixes #{bug number} (in this specific format)

[jennyf19]

thanks @kengaderdus but I don't see the value in this one...a lot of the previous content was more specific and actionable.

[kengaderdus]

@jennyf19

We're removing real GUIDs and replacing them with placeholders or visibly fake GUIDs.

[jmprieur]

I don't see that the app creation scripts were updated

[kengaderdus]

@jmprieur I still don't understand your request. Can you point me to text that you think should have been updated?

[jmprieur]

@kengaderdus: all chapters have app creation scripts that provide an app registration and the config of the app.
See https://github.com/Azure-Samples/active-directory-aspnetcore-webapp-openidconnect-v2/blob/master/1-WebApp-OIDC/1-1-MyOrg/AppCreationScripts/Configure.ps1 for instance.

For the B2C sample, not sure if we can accept this as setting-up B2C is a lot of work for customers.