Updated travis build scripts (from rspec-dev)
requested to merge github/fork/olleolleolle/update-travis-build-scripts-2019-04-01-for-master into master
Created by: olleolleolle
See rspec/rspec-dev#218
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Created by: olleolleolle
See rspec/rspec-dev#218