[ReleasePR datalake-analytics] [Hub Generated] Review request for Microsoft.DataLakeAnalytics to add version preview/2015-10-01-preview (#1455)

Create to sync Azure/azure-rest-api-specs#11289
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/master...AzureSDKAutomation:sdkAuto/datalake-analytics?expand=1)

Author: msftbot[bot]