Use Standard_LRS instead of Standard_ZRS

[debonte]

Purpose

I was trying to deploy the sample, but it was difficult to find an Azure region that would support text-embedding-ada-002, and had available OpenAI quota in my subscription, and supported the Standard_ZRS storage type. Although ZRS is probably important for production scenarios, using zone redundant storage seems unnecessary for getting started with the sample and unnecessarily limits the user's region options.

Does this introduce a breaking change?

[ ] Yes
[X] No

Pull Request Type

What kind of change does this Pull Request introduce? Change storage type used when deploying via azd up from Standard_ZRS to Standard_LRS.

[X] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

azd env new [your-new-name]
azd up     (Target the `northcentralus` region which appears to not support `Standard_ZRS`)

Other Information

@pamelafox suggested that using Standard_ZRS for production could be covered in a new FAQ/readme section on productionizing the sample.

[pamelafox]

Great, thanks! I've started a branch with a README section about production-izing.