101-function-app-create-dynamic contains undocumented property

[Provision a function app on a Consumption plan](https://github.com/Azure/azure-quickstart-templates/tree/master/101-function-app-create-dynamic)

### Issue Details
[azuredeploy.json](https://github.com/Azure/azure-quickstart-templates/blob/master/101-function-app-create-dynamic/azuredeploy.json) defines an instance of Application Insights. On line [137 ](https://github.com/Azure/azure-quickstart-templates/blob/69300ccd6377fdcebfd95e1c2c6f5d6f5c7a0510/101-function-app-create-dynamic/azuredeploy.json#L137) it includes the ApplicationId property. This property is not documented in the [ARM template documentation](https://docs.microsoft.com/en-us/azure/templates/microsoft.insights/2020-02-02-preview/components#applicationinsightscomponentproperties-object).

Is this property not not required in here or there is some missing documentation?

Start with 101-function-app-create-dynamic/azuredeploy.json at line 137 and compare ApplicationId with the linked Application Insights ARM template documentation. Determine whether the property is supported or required, then make the template and documentation consistent. Done means the property’s status is documented clearly or the template no longer relies on an undocumented property.

Written by the indexing model from the issue text.