abci: update proto/grpc and fix KVPair errors #1944
Description
We are currently pinned to a revision of genproto which causes issues with importing Tendermint, ie. #1777
We can remove this error and the need to version the genproto by updating protobuf to v1.1.0, but then our grpc test fail with:
--- FAIL: TestBroadcastTx (0.01s)
panic: message/group field common.KVPair:bytes without pointer [recovered]
panic: message/group field common.KVPair:bytes without pointer
...
github.com/tendermint/tendermint/rpc/grpc_test.TestBroadcastTx(0xc420a5ab40)
/go/src/github.com/tendermint/tendermint/rpc/grpc/grpc_test.go:29 +0x141
We also get some erroneous output (#1853) that looks like:
proto: no slice oenc for *reflect.rtype = []*reflect.rtype
proto: no encoder for Tags []common.KVPair [GetProperties]
Perhaps the two problems are related. Using this issue to replace the others.