you can trigger a gerrit test build on all platforms of the feature branch you
are currently on in the state it is pushed to gerrit. You can also explicitly
specify a branch:
./logerrit testfeature $featurebranch
The implementation is somewhat cumbersome, doing a clone and checkout to a
tempdir and then rm -rf'ing that. As such it is intended mostly as an
inspiration for your own script-foo, rather than as the canonical way to test a
feature branch. Have fun!