Proto commits in kragniz/python-etcd3

These 6 commits are when the Protocol Buffers files have changed:

Commit:bd3dbd9
Author:Junpei Kawamoto
Committer:Junpei Kawamoto

Update proto files and to regenerate _pb2.py files

The documentation is generated from this commit.

Commit:2f3dba6
Author:Louis Taylor

Copy latest jetcd .protos

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