Fix outdated comment in Release.sh

After 8fe826fbb73b6c29e00e38440fa9aea422e502b9, we build on multiple
architectures; this updates the comment to match.
Merge pull request #88 from kevinwallace/release_comment

Fix outdated comment in Release.sh
fix tests for new topo runner
Merge pull request #91 from iansmith/fix_tests_for_new_topo_runner_with_etcd

fix tests for new topo runner