Logic Apps with managed identities not supported

[smokedlinq]

Bicep version
0.2.14 (both bicep and VSCode extension)

Describe the bug
When defining Logic App resources like below, VSCode states that the identity property is not allowed (BCP038), or when using the resource reference that the resource does not contain that property (BCP053).

param logicAppDefinition object = {}
param containerId string

resource logicApp 'Microsoft.Logic/workflows@2019-05-01' = {
  name: 'logic-app'
  location: resourceGroup().location
  identity: {
    type: 'SystemAssigned'
  }
  properties: {
    state: 'Enabled'
    definition: logicAppDefinition.definition
  }
}

resource logicAppStorageBlobDataContributor 'Microsoft.Authorization/roleAssignments@2020-04-01-preview' = {
  name: guid('${containerId}-${logicApp.name}-ba92f5b4-2d11-453d-a403-e96b0029c9fe')
  properties: {
    roleDefinitionId: '${subscription().subscriptionId}/providers/Microsoft.Authorization/roleDefinitions/ba92f5b4-2d11-453d-a403-e96b0029c9fe'
    principalId: logicApp.identity.principalId
  }
}

To Reproduce
Try to define a logic app resource with a managed identity.

Additional information
The build also fails with similar errors.

[smokedlinq]

FYI - I can get around this by using version 2017-07-01 but get a warning about that resource type does not have types available (BCP081) ... I didn't see the 2019-05-01 version listed on the schema for https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json

[alex-frankel]

We'll need the logicapp team to fix their swagger definition. The identity property is not declared as an allowed property:
https://docs.microsoft.com/en-us/azure/templates/microsoft.logic/2019-05-01/workflows

Compare this to ACI, which does have identity declared:
https://docs.microsoft.com/en-us/azure/templates/microsoft.containerinstance/containergroups

Looks like it is also missing from 2016-06-01, but their doc shows using the identity property: https://docs.microsoft.com/en-us/azure/logic-apps/create-managed-service-identity#create-user-assigned-identity-in-an-azure-resource-manager-template

So assuming that doc is right, this should just be a swagger docs problem.

[smartpcr]

Error BCP038: The property "identity" is not allowed on objects of type "Microsoft.Web/sites".

[miqm]

@alex-frankel - perhaps to avoid such issues in future in bicep, we could introduce some technique i.e. @ignoreInvalidProperty('propertyName') decorator?

[miqm]

@alex-frankel Any update on this? Nvmd, I saw comment on #3000

[anthony-c-martin]

Fixed in Bicep v0.4.1008.