planning: add sequence_num to learning data proto
planning: add sequence_num to learning data proto

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