Support restartInstance and add restartPostUri in HttpManagementPayload

[kamperiadis]

Issue describing the changes in this PR

Resolves #108 With these changes, we now support restartInstance and we pass the restartPostUri, resumePostUri and suspendPostUri values in the HttpManagementPayload

Pull request checklist

• [ ] My changes do not require documentation changes
  • [ ] Otherwise: Documentation issue linked to PR
  • [x] Create issue https://github.com/microsoft/durabletask-java/issues/105 to track document update
• [x] My changes are added to the CHANGELOG.md
• [x] I have added all required tests (Unit tests, E2E tests)