[20190905141723] Build Logs, No Follow, Bug Fixes

[ddollar]

Notes

• Handles a change to the AWS FilterLogEvents API that was causing --no-follow to never stop following logs.
• Ensure all build logs are displayed during after a build completes

Pull Requests

• #3296 Removed port 80 from ELB security group [@rabidaudio]
• #3298 properly surface token not found errors [@ddollar]
• #3299 update log subscription to handle FilterLogEvents changes [@ddollar]
• #3300 ensure all of the build logs have been displayed before exiting [@ddollar]