Update outdated language

[HifiExperiments]

just removing some non-inclusive language:

• master -> primary
• slave -> worker
• whitelist -> allowlist
• blacklist -> blocklist

I think it would be nice to change our default branch from "master" to "main", which are the only remaining instances of "master" now (besides external links)

this is mostly a non-functional change. there are one or two scripting functions and settings handles that changed but they are very minor