SQL MI Update

[senavar]

Change

Updated the SQL MI Module to document the requirements/configuration of NSG + Route Table for SQL MI
Updated code + readme to deploy service principal for Azure AD Authentication
Added ability to configure Zone Redundancy and Backup Storage Redundancy

Type of Change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update (Wiki)

Checklist

• I'm sure there are no other open Pull Requests for the same update/change
• My corresponding pipelines / checks run clean and green without any errors or warnings
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (readme)
• I did format my code

The pipeline is red because it timed out, the SQL MI successfully deployed and removed when reviewing pipeline logs.