Only run the tests in GA on pushes to the master branch
Only run the tests in GA on pushes to the master branch

Otherwise we get double runs when pushing to another branch with a PR
already open. I forgot about this scenario when setting it up before,
but I've seen it in a couple other projects.

This unfortunately means that simple pushes to a different branch won't
build, until you've opened a PR. But you can always open a draft PR to
get the build going there then, which also helps to have a place to
document and/or discuss stuff as you're working through it.

adamlogic/rails_autoscale_agent,adamlogic/rails_autoscale_agent,adamlogic/rails_autoscale_agent