Retry failed runs in CI
Retry failed runs in CI

Sometimes a build/test fails for an arbitrary reason. With
this change we will retry it once, just to be sure (and not
fail the whole pipeline just because of some flakiness).

chambm/docker-galaxy-stable,bgruening/docker-galaxy-stable,bgruening/docker-galaxy-stable,chambm/docker-galaxy-stable,chambm/docker-galaxy-stable,bgruening/docker-galaxy-stable