generate protos for prepare proposal

abci/example/kvstore/kvstore.go

@@ -169,4 +169,4 @@ func (app *Application) Query(reqQuery types.RequestQuery) (resQuery types.Respo
 	resQuery.Height = app.state.Height
 
 	return resQuery
-}
+}

abci/example/kvstore/persistent_kvstore.go

@@ -126,7 +126,7 @@ func (app *PersistentKVStoreApplication) BeginBlock(req types.RequestBeginBlock)
 
 	// Punish validators who committed equivocation.
 	for _, ev := range req.ByzantineValidators {
-		if ev.Type == types.EvidenceType_DUPLICATE_VOTE {
+		if ev.Type == types.MisbehaviorType_DUPLICATE_VOTE {
 			addr := string(ev.Validator.Address)
 			if pubKey, ok := app.valAddrToPubKeyMap[addr]; ok {
 				app.updateValidator(types.ValidatorUpdate{
@@ -170,6 +170,11 @@ func (app *PersistentKVStoreApplication) ApplySnapshotChunk(
 	return types.ResponseApplySnapshotChunk{Result: types.ResponseApplySnapshotChunk_ABORT}
 }
 
+func (app *PersistentKVStoreApplication) PrepareProposal(
+	req types.RequestPrepareProposal) types.ResponsePrepareProposal {
+	return types.ResponsePrepareProposal{}
+}
+
 //---------------------------------------------
 // update validators