Added arch and storage_account, needed by CIV to deploy the resources…

[narmaku]

… without having to check for vhd uri regex.

The regex check is now not needed since we create other shared image metadata on the fly. Plus it was not a good solution for an upstream project, as the regex was only affecting our RH teams internally.

This pull request includes:

• [x] adequate testing for the new functionality or fixed issue
• [x] adequate documentation informing people about the change such as
  • [x] submit a PR for the READMEs listed here
  • [x] submit a PR for the osbuild.org website repository if this PR changed any behavior not covered by the automatically updated READMEs

[narmaku]

See related CIV PR here: https://github.com/osbuild/cloud-image-val/pull/327