Adding value array to Tag. (#12555)

Author: sofisa16

specification/consumption/resource-manager/Microsoft.Consumption/stable/2019-10-01/consumption.json

@@ -3824,6 +3824,13 @@
         "key": {
           "description": "Tag key.",
           "type": "string"
+        },
+        "value": {
+          "description": "Tag values.",
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
         }
       }
     },