Operational insights data exports make tables name as required (#12385)

* microsoft.operationalinsights_add_data_export

* fix

* fix

* make tablesname property as required

* use required property as expected

* fix

Co-authored-by: Hodaya Hershkovich <hohershk@microsoft.com>

Author: hohershk

specification/operationalinsights/resource-manager/Microsoft.OperationalInsights/preview/2019-08-01-preview/OperationalInsights.json

@@ -482,6 +482,9 @@
           "description": "Date and time when the export was last modified."
         }
       },
+      "required": [
+        "tableNames"
+      ],
       "description": "Data Export properties."
     },
     "Destination": {

specification/operationalinsights/resource-manager/Microsoft.OperationalInsights/preview/2020-03-01-preview/DataExports.json

@@ -301,6 +301,9 @@
           "description": "Date and time when the export was last modified."
         }
       },
+      "required": [
+        "tableNames"
+      ],
       "description": "Data Export properties."
     },
     "Destination": {

specification/operationalinsights/resource-manager/Microsoft.OperationalInsights/stable/2020-08-01/DataExports.json

@@ -301,6 +301,9 @@
           "description": "Date and time when the export was last modified."
         }
       },
+      "required": [
+        "tableNames"
+      ],
       "description": "Data Export properties."
     },
     "Destination": {