[ReleasePR applicationinsights] [Hub Generated] Review request for Microsoft.Insights to add version preview/2018-05-01-preview (#1862)

Create to sync Azure/azure-rest-api-specs#15636
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...AzureSDKAutomation:sdkAuto/applicationinsights?expand=1)

Author: msftbot[bot]