Add unit tests to ensure that step names used in steps.py are valid identifier (e.g.: doesn't contain space). Buildbot 0.9+ requires step names to be identifiers, and identifier can't contain spaces http://docs.buildbot.net/0.9.8/manual/installation/nine-upgrade.html#identifiers
Created attachment 395973 [details] Patch
This would prevent people from accidentally using spaces in step name (e.g.: https://bugs.webkit.org/show_bug.cgi?id=210202#c15)
Committed r259815: <https://trac.webkit.org/changeset/259815> All reviewed patches have been landed. Closing bug and clearing flags on attachment 395973 [details].
<rdar://problem/61533468>