[WebToolsE2E][Aspire] When using the 'aspire add redis' command and run the project, there was no cache project in the Aspire Dashboard.

[Coleen17]

INSTALL STEPS

1.Clean machine: Win11 x64 ENU
2.Install SDK 9.0.202
3. Add dotnet9 feed for 9.2.0-preview.1
4. Install the latest Aspire 9.2.0-preview.1 templates
dotnet new install Aspire.ProjectTemplates::9.2.0-preview.1.25176.8 --force
5. Install aspire.cli tool.
dotnet tool install --global aspire.cli --prerelease --source https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet9/nuget/v3/index.json

NOTE

1. This issue doesn't reproduce when using this command dotnet new aspire-starter --use-redis-cache -o Aspire1 the cache in the Aspire Dashboard displayed successfully.

REPRO STEPS

1. Open CMD, create a folder using following commands:

mkdir aspireapp1
cd aspireapp1
aspire new
cd aspireapp1.apphost
aspire add

2. Select add redis from the choices or can add redis directly.
   aspire add redis

3. Run the project.
   aspire run/dotnet run

4. Check the cache project in the Aspire Dashboard.

ACTUAL
There is no cache in the Aspire dashboard that indicates redis package has been included.

EXPECTED
The redis package should be included.

[mitchdenny]

This is expected. What aspire add does is add the hosting integration to the AppHost, but it doesn't update the code to do it, you need to manually go in and add the code:

builder.AddRedis("cache");

[mitchdenny]

@maddymontaquila even though this is currently by design I do think it will be confusing to folks so I think in the near term (9.3?) we probably want to automatically add in the code.

The challenge is figuring out what the code should be in the first place. Perhaps the best we can do for 9.2 is point to the README, so a dupe of #8159