Add a preservation_version config to sandbox filters exposing cbuf configs

- update http_status to include 100's (for Loop, but is good in general)
- add a unit test for http_status since it was modified and didn't have one
For the current release, but that is the point, the schema changed.  If the user is running their own version in the future say 7 (it will actually be the internal version plus the user version so the check will test 8).  If we change the internal schema again we add 2 forcing another reset otherwise the version would remain stable at 8..