[build.webkit.org] Use workersrc instead of slavesrc for new Buildbot. New buildbot doesn't support slave terminology and slavesrc should be replaced with workersrc.
Created attachment 413604 [details] Patch
Committed r269596: <https://trac.webkit.org/changeset/269596> All reviewed patches have been landed. Closing bug and clearing flags on attachment 413604 [details].
<rdar://problem/71205990>