Comment 1 for bug 1770714

I see this in the etcd logs around the time of the error but they don't tell us anything:

http://logs.openstack.org/25/567625/2/gate/tempest-full/8f0fba4/controller/logs/screen-etcd.txt.gz

May 11 16:09:09.672196 ubuntu-xenial-rax-ord-0003979398 etcd[14958]: proto: no coders for int
May 11 16:09:09.770247 ubuntu-xenial-rax-ord-0003979398 etcd[14958]: proto: no coders for int

Because of this issue:

https://github.com/grpc-ecosystem/grpc-gateway/pull/256