A recognition error occurred. Token: "=". Position: 34.

Issue Details:

Hi,

ARM Template: https://github.com/Azure/azure-quickstart-templates/tree/master/oms-servicebus-solution

I was using the OMS template for quite some time now. Recently the OMS was update by Microsoft. After the update i get a lot of errors and the dashboard are all but blank.

The reason they are blank because the query language has been updated.

Error message upon loading the dashboard:
**A recognition error occurred. Token: "=". Position: 34.**

Steps for reproduction:
1. Install the OMS Arm template
2. Wait for the Ingestion engine to fire.
3. Go to OMS and open the Azure Service Bus Analytics dashboard.
4. Find all the tiles empty with error message: A recognition error occurred. Token: "=". Position: 34.

Start with the oms-servicebus-solution ARM template linked in the issue and reproduce the failure by opening the Azure Service Bus Analytics dashboard in OMS after ingestion. Inspect the dashboard queries against the current query-language behavior; done means the tiles load without the recognition error.

Written by the indexing model from the issue text.