Currently the etcd backend tests are failing, due to hardcoded endpoints = "https://127.0.0.1:2379"

This is somewhat different than the other backends. Ideally, we can start an etcd server (or mock server) locally, on a random port, and dynamically use this in the unit tests

Would be cool to have snippets page that covers some very common tasks. Here are a few off the top of my head:

• recursively get all files in a directory (i.e., with glob)
• list directory, but not recursively
• write a new file to the cloud
• make a persistent local cache
• open a file for read/write
• passing an instantiated client rather than using the de