[Hub Generated] Review request for Microsoft.Consumption to add version stable/2019-10-01 (Azure#16503)

* Lowered minItems to 0 to match API implementation

* Added missing ThresholdType value.

Author: sashahdo

specification/consumption/resource-manager/Microsoft.Consumption/stable/2019-11-01/consumption.json

@@ -4162,7 +4162,8 @@
           "description": "The type of threshold",
           "type": "string",
           "enum": [
-            "Actual"
+            "Actual",
+            "Forecasted"
           ],
           "x-ms-enum": {
             "name": "ThresholdType",