Currently when a build step is launched is being associated to the available worker. For validation purposes there is the need to trigger specific step to specific worker/workers, as example, I need to trigger "nightly-oe-selftes" in centos7 and Fedora23 at the same time to compare results when both test finished.
Setting the importance to undecided so it gets triaged again since this bug blocks bug 10603 and would need to be included in 2.3 then.
Will achieve this same request via buildsets that run on a specific set of workers.
http://git.yoctoproject.org/cgit.cgi/yocto-autobuilder2/commit/?id=b0f684ee64b1397e181f1d6e563f8a071a232633