[ReleasePR synapse] Add new sql pool resource properties (#1727)

Create to sync Azure/azure-rest-api-specs#12977
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/master...AzureSDKAutomation:sdkAuto/synapse?expand=1)

Author: msftbot[bot]

schemas/2020-04-01-preview/Microsoft.Synapse.json

@@ -175,7 +175,34 @@
     },
     "SqlPoolProperties": {
       "type": "object",
-      "properties": {},
+      "properties": {
+        "autoPauseTimer": {
+          "oneOf": [
+            {
+              "type": "integer"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "The period of inactivity in minutes before automatically pausing the sql pool."
+        },
+        "autoResume": {
+          "oneOf": [
+            {
+              "type": "boolean"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Indicates whether the sql pool can automatically resume when connection attempts are made."
+        },
+        "maxServiceObjectiveName": {
+          "type": "string",
+          "description": "The max service level objective name of the sql pool."
+        }
+      },
       "description": "The sql pool's properties."
     }
   }