avoid shadowing in returners.multi_returner
avoid shadowing in salt.modules.network
Merge pull request #18399 from hulu/routes-shadowing

avoid shadowing in salt.modules.network
Merge pull request #18388 from hulu/returner-shadowing

avoid shadowing in returners.multi_returner
Merge pull request #18398 from tjyang/develop

correct the TOC missing issue