Data: Rename to last_driving_mode_ to make it clear.
Data: Rename to last_driving_mode_ to make it clear.

jinghaomiao/apollo,xiaoxq/apollo,xiaoxq/apollo,ycool/apollo,ApolloAuto/apollo,wanglei828/apollo,ApolloAuto/apollo,ApolloAuto/apollo,ApolloAuto/apollo,ycool/apollo,wanglei828/apollo,xiaoxq/apollo,ycool/apollo,xiaoxq/apollo,wanglei828/apollo,jinghaomiao/apollo,xiaoxq/apollo,wanglei828/apollo,jinghaomiao/apollo,wanglei828/apollo,ycool/apollo,jinghaomiao/apollo,ycool/apollo,wanglei828/apollo,ApolloAuto/apollo,jinghaomiao/apollo,jinghaomiao/apollo,xiaoxq/apollo,ApolloAuto/apollo,ycool/apollo