* Add CreatedBy and CreatedOn fields to locks.
* Move the setting of the CreatedBy and CreatedOn for locks to the server instead of the client.
* Add tests for the tctl resource lock import and for the tctl lock create command.
* Use clockwork for time in lock creation tests.
* Make fake clock optional and use the golang 0 date.
* Change CreatedOn to CreatedAt.
* Allow a custom time to be passed through as a fake clock.
* Actually accept a fake clock with useFakeClock.
* Pass Clock through as a configuration value when initializing Teleport for the tests.
* Test cleanup
* Set CreatedBy and CreatedAt values in test mocks.
* Fix failing test from enabling clock passthrough to auth.
