* Start work on passing context to backends
* More work on passing context
* Unindent logical system
* Unindent token store
* Unindent passthrough
* Unindent cubbyhole
* Fix tests
* use requestContext in rollback and expiration managers
* Add logic for using Auth.Period when handling auth login/renew requests
* Set auth.TTL if not set in handleLoginRequest
* Always set auth.TTL = te.TTL on handleLoginRequest, check TTL and period against sys values on RenewToken
* Get sysView from le.Path, revert tests
* Add back auth.Policies
* Fix TokenStore tests, add resp warning when capping values
* Use switch for ttl/period check on RenewToken
* Move comments around