Update VM

updatevm.json

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "vmName": {
      "type": "string",
      "metadata": {
        "description": "Name of the virtual machine"
      }
    },
    "keyVaultName": {
      "type": "string",
      "metadata": {
        "description": "Name of the KeyVault to place the volume encryption key"
      }
    },
    "keyVaultResourceGroup": {
      "type": "string",
      "metadata": {
        "description": "Resource group of the KeyVault"
      }
    },
	"keyVaultSecretUrl": {
      "type": "string",
      "metadata": {
        "description": "SecretUrl of keyvault"
      }
    },
    "keyEncryptionKeyURL": {
      "type": "string",
      "defaultValue": "",
      "metadata": {
        "description": "URL of the KeyEncryptionKey used to encrypt the volume encryption key"
      }
    }
  },
  "variables": {
    "keyVaultURL": "[concat('https://', parameters('keyVaultName'), '.vault.azure.net/')]",
    "keyVaultResourceID": "[concat(subscription().id,'/resourceGroups/',parameters('keyVaultResourceGroup'),'/providers/Microsoft.KeyVault/vaults/', parameters('keyVaultName'))]"
  },
  "resources": [
    {
      "name": "updatevm",
      "type": "Microsoft.Resources/deployments",
      "apiVersion": "2015-01-01",
      "properties": {
        "mode": "Incremental",
        "templateLink": {
          "uri": "[if(equals(parameters('useExistingKek'), 'nokek'), 'https://gist.githubusercontent.com/ShridharParameshwarBhat/b1472d88e7cda8b193d5f7dfd272f341/raw/f3dc57e00bf9971a384b58162aadecad46fe85a3/clientcertnokek.json', 'https://gist.githubusercontent.com/ShridharParameshwarBhat/869405ea68593c8ccca2c8ea1b9537e6/raw/2380a0a5d7f8e2cd6c27c286a1ef082910e28cb8/clientcertusekek.json')]",
          "contentVersion": "1.0.0.0"
        },
        "parameters": {
          "vmName": {
            "value": "[parameters('vmName')]"
          },
          "keyVaultResourceID": {
            "value": "[variables('keyVaultResourceID')]"
          },
          "keyVaultSecretUrl": {
            "value": "[parameters('keyVaultSecretUrl')]"
          },
          "keyEncryptionKeyURL": {
            "value": "[parameters('keyEncryptionKeyURL')]"
          }
        }
      }
    }
  ],
  "outputs": {
    "BitLockerKey": {
      "type": "string",
      "value": "[reference(resourceId('Microsoft.Compute/virtualMachines/extensions',  parameters('vmName'), variables('extensionName'))).instanceView.statuses[0].message]"
    }
  }
}