The old format is still present and works just like it did before, so
your existing scripts won't break.
New format pros:
* it's readable even for Swift newcomers
* it's easy to extend
* it's familiar to anyone who's used a Unix command line
* we don't have to maintain the parser
New format cons:
* you can't add multiple devices in one go
Old format pros:
* you can add many devices with one command
* it's compact
Old format cons:
* it confuses newcomers
* "wait, is that zone dash IP colon port slash device, or zone slash
IP dash port colon meta underscore device?" Just try walking
someone through adding a device over voice chat.
* it's annoying to add new fields
Note that this only affects the command "swift-ring-builder
<builderfile> add". Other swift-ring-builder commands are unchanged.
DocImpact
Change-Id: I034b7f79eb6f4d81a5c4da193e1358741441c5b5
d69f929be9