azure-sdk-for-java automation config enable track2 (Azure#11865)

DataPlane not supported

Author: Phoenix He

specificationRepositoryConfiguration.json

@@ -8,7 +8,8 @@
     },
     "azure-sdk-for-java": {
       "integrationRepository": "AzureSDKAutomation/azure-sdk-for-java",
-      "mainRepository": "Azure/azure-sdk-for-java"
+      "mainRepository": "Azure/azure-sdk-for-java",
+      "configFilePath": "eng/mgmt/automation/swagger_to_sdk_config.json"
     },
     "azure-sdk-for-js": {
       "integrationRepository": "AzureSDKAutomation/azure-sdk-for-js",