Import existing Azure Policy resources as Pulumi policies

[praneetloke]

Hello!

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Issue details

I have policies created using Azure Policy. I'd like to convert them to Pulumi policies by importing them.

Expand to see an example of a policy definition

{
  "properties": {
    "displayName": "Vulnerability Assessment settings for SQL server should contain an email address to receive scan reports",
    "policyType": "BuiltIn",
    "mode": "Indexed",
    "description": "Ensure that an email address is provided for the 'Send scan reports to' field in the Vulnerability Assessment settings. This email address receives scan result summary after a periodic scan runs on SQL servers.",
    "metadata": {
      "version": "2.0.0",
      "category": "SQL"
    },
    "parameters": {
      "effect": {
        "type": "String",
        "metadata": {
          "displayName": "Effect",
          "description": "Enable or disable the execution of the policy"
        },
        "allowedValues": [
          "AuditIfNotExists",
          "Disabled"
        ],
        "defaultValue": "AuditIfNotExists"
      }
    },
    "policyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Sql/servers"
      },
      "then": {
        "effect": "[parameters('effect')]",
        "details": {
          "type": "Microsoft.Sql/servers/vulnerabilityAssessments",
          "name": "default",
          "existenceCondition": {
            "allOf": [
              {
                "field": "Microsoft.Sql/servers/vulnerabilityAssessments/default.recurringScans.emails[*]",
                "notEquals": ""
              },
              {
                "count": {
                  "field": "Microsoft.Sql/servers/vulnerabilityAssessments/default.recurringScans.emails[*]"
                },
                "notEquals": 0
              }
            ]
          }
        }
      }
    }
  },
  ...
}

Affected area/feature

[KamilLach]

That would be really cool to reuse existing policy definitions and import them as cross guards.