Remove hardcoded BLOB url from Fido2MetadataServiceRepository.cs

[joegoldman2]

We should probably remove the hardcoded BLOB url from Fido2MetadataServiceRepository.cs and change this line:

fido2-net-lib/Src/Fido2.AspNet/Fido2NetLibBuilderExtensions.cs

Line 78 in 15263ca

var httpClientBuilder = builder.Services.AddHttpClient(nameof(Fido2MetadataServiceRepository));

to something like:

var httpClientBuilder = builder.Services.AddHttpClient(nameof(Fido2MetadataServiceRepository), client =>
{
    client.BaseAddress = new Uri("https://mds3.fidoalliance.org/");
});

This will allow users to configure the url they want (especially when a new version is available) using the clientBuilder delegate from AddFidoMetadataRepository .

What do you think @abergs and @iamcarbon?

[aseigler]

Makes sense to me, as long as there is a default.