template unit not found if not in local directory

```
% ls examples/
hello@.service
% fleetctl start examples/hello@15.service
unable to find template for Unit(hello@15.service) in Registry or on disk
% ls ./
examples goodbye@.service
% fleetctl start goodbye@15.service
Job goodbye@15.service launched on 1b07b9b4.../172.17.8.102
```