Send Default Async HTTP Request Sleep Time in OOProc Payload

[hossam-nasr]

Send Config.Options.HttpSettings.DefaultAsyncRequestSleepTimeMilliseconds, which is used to determine the default time to wait between requests when doing HTTP polling, in the payload to out of proc SDKs. This allows OOProc SDKs to recreate extension behavior to implement callHttp polling for OOProc languages

Issue describing the changes in this PR

Unblocks Azure/azure-functions-durable-js#284, JS SDK PR: Azure/azure-functions-durable-js#346

Pull request checklist

• My changes do not require documentation changes
  • Otherwise: Documentation PR is ready to merge and referenced in pending_docs.md
• My changes should not be added to the release notes for the next release
  • Otherwise: I've added my notes to release_notes.md
• My changes do not need to be backported to a previous version
  • Otherwise: Backport tracked by issue/PR #issue_or_pr
• I have added all required tests (Unit tests, E2E tests)
• My changes do not require any extra work to be leveraged by OutOfProc SDKs
  • Otherwise: That work is being tracked here: Implement CallHttp Polling Replay Logic azure-functions-durable-js#346
• My changes do not change the version of the WebJobs.Extensions.DurableTask package
  • Otherwise: major or minor version updates are reflected in /src/Worker.Extensions.DurableTask/AssemblyInfo.cs