Add tor agents support for OC 4.X version

- added tor agent provisioning
- refactored tor metadata

Change-Id: Ic7c034f647639d037dfa9b9c2c0eac65d4121d19
Related-PROD: PROD-29061
(cherry picked from commit 2a301f959ad09a20c893b355a4cb5c95f84a026a)
8 files changed