Add a vmware-dev variant

[zmrow]

Issue number:
N/A

Description of changes:
This change adds the necessary files for a VMWare development variant. The files are currently a copy of the aws-dev variant but will diverge over time.

This variant currently includes some AWS settings that are required to fully boot, but those settings will slowly disappear as we eliminate any AWS dependencies in the software.

Testing done:

• Build and run the variant locally (including the changes from Add conditional compilation to early-boot-config #1288 and Add a systemd mount unit for CD-ROM devices #1290 ) to ensure that the variant boots and correctly looks at /media/cdrom for userdata

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.

[tjkirch]

I think we should add this to .github/workflows/build.yml, as an optional build like aws-dev, to make sure we don't break it as we develop.

I guess we can wait on sources/models/src/lib.rs (for README generation) and variants/README.md until there's some useful difference, but let's not forget...

[edit] Actually, the cdrom difference is there, so it might be worth doing this now?

[zmrow]

I guess we can wait on sources/models/src/lib.rs (for README generation) and variants/README.md until there's some useful difference, but let's not forget...
[edit] Actually, the cdrom difference is there, so it might be worth doing this now?

Good catch - I completely missed this.

[zmrow]

^ Addressed all the comments!

[zmrow]

^ Addressed @tjkirch 's comments

[zmrow]

^ The above push:

• Addresses the remaining comments
• Takes advantage of the default settings refactor from Refactor default settings files to allow sharing #1303
• Add a commit that fixes a small bug in host-containers. Previously if a user didn't define any host containers, the program would fail. The change ensures that the program continues on gracefully since it has nothing to do.

[zmrow]

^ Integrate @tjkirch 's wording suggestion