add new sql pool resource properties (Azure#12977)

Author: chzachar

specification/synapse/resource-manager/Microsoft.Synapse/preview/2020-04-01-preview/sqlPool.json

@@ -315,6 +315,19 @@
           "description": "The requested service level objective name of the sql pool.",
           "type": "string",
           "readOnly": true
+        },
+        "maxServiceObjectiveName": {
+          "description": "The max service level objective name of the sql pool.",
+          "type": "string"
+        },
+        "autoPauseTimer": {
+          "format": "int32",
+          "description": "The period of inactivity in minutes before automatically pausing the sql pool.",
+          "type": "integer"
+        },
+        "autoResume": {
+          "description": "Indicates whether the sql pool can automatically resume when connection attempts are made.",
+          "type": "boolean"
         }
       }
     },