Ability to Test Azure Policy Definitions

[lhasadreams]

Detailed Description

Azure allows you to show the Policy Definitions on a subscription
Policy Definitions
I would like to be able to interrogate these from InSpec

Context

To check that the Policy Definitions for both built in and custom ones are set up correctly.
This allows InSpec to check that the Policy Definitions are not drifting and report them for remediation if they do.
I would like to check if the Policy is set to deny for example.
I have two customers that would like to make use of this resource (one potential and another in flight).

Possible Implementation

inspec>` describe azure_built_in_policy_definition(name: 'rg-owner-tag', built_in: false) do
inspec>   it {should exist}  
inspec> end  
add: true
Profile: inspec-shell
Version: (not specified)
  Azure Built In Policy Definition - api_version: 2019-09-01 latest: /subscriptions/1e0b427a-d58b-494e-ae4f-ee558463ebbf/providers/Microsoft.Authorization/policyDefinitions/rg-owner-tag
     ✔  is expected to exist
Test Summary: 1 successful, 0 failures, 0 skipped