outset --checksum all includes /usr/local/outset/logs

[seanchristians]

Calculating the checksums for all of the scripts to be deployed also includes any logs that were generated by outset on the machine.

The swift code includes all files in /usr/local/outset, but it should exclude /usr/local/outset/logs. I'm not a swift developer, otherwise I'd just make a PR.

Thanks!