etcd v3 clients feature/maturity matrix

[xiang90]

There are currently two "official" etcd v3 clients, written in go and java. Our users want us to provide help on the etcd clients written in other languages (python, ruby, etc.)

To get started, I propose to start define the functionalities that a client should support, and a way to measure the maturity. At least, our users can choose external client more wisely. Also we can encourage the client writers to stabilize their client when there is a guideline.

/cc @davissp14 @jpbetz

[davissp14]

@xiang90 What are your thoughts on moving my etcdv3-ruby client to the etcd-io namespace? https://github.com/davissp14/etcdv3-ruby

I have quite a few other projects going on and i'm just not finding the time to work on it.

[stale]

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