Proto commits in martyanov/aetcd

These 9 commits are when the Protocol Buffers files have changed:

Commit:0755056
Author:Andrey Martyanov

Update proto files from upstream etcd 3.5.1

The documentation is generated from this commit.

Commit:a72d2f1
Author:Andrey Martyanov

Update proto files from upstream etcd 4.3.15

Commit:6677095
Author:Andrey Martyanov
Committer:Andrey Martyanov

Move proto files out of aetcd3 package

Commit:f3c459d
Author:Andrey Martyanov

Rename 'etcd3aio' package to 'aetcd3'

Commit:6a23c66
Author:Aleksei Gusev

Rename module to etcd3aio

Commit:f64de31
Author:boolean5
Committer:boolean5

Update rpc.proto to the latest version Update rpc.proto and the generated protobuf files, using the version from the release-3.3 branch of etcd. Closes #567.

Commit:4eb7ac5
Author:Julien Danjou
Committer:Julien Danjou

Update to latest proto version

Commit:93969ea
Author:Louis Taylor

Regenerate proto stubs

Commit:bcf5a8e
Author:Louis Taylor

Import proto files from jetcd