Add log.newline alias for readability

This makes it clearer why we're calling `log` with no arguments.

Change-Id: I9901d392b81a041a03a7d81eb0bed4e571469199
Reviewed-on: http://gerrit.causes.com/44891
Tested-by: jenkins <jenkins@brigade.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>