[build.webkit.org] Rename slave to worker in config.json. This is for two purposes: 1) Preparing to upgrade buildbot 2) Using more inclusive naming
Created attachment 411266 [details] Patch
<rdar://problem/70268459>
<rdar://problem/70268473>
Tested on https://build.webkit-uat.org
Committed r268429: <https://trac.webkit.org/changeset/268429> All reviewed patches have been landed. Closing bug and clearing flags on attachment 411266 [details].