tests: Add tests for ignore files
tests: Add tests for ignore files

Signed-off-by: Cameron Diver <1d572acbfa68c7c6e541c7b840d6b622e5c0dc91@resin.io>

resin-io/resin-cli,resin-io/resin-cli,resin-io/resin-cli,resin-io/resin-cli