[Cyber] Improve the performance of python Topology Manager
[Cyber] Improve the performance of python Topology Manager

The original Topology Manager will create the new node_manager or node_manager in every function call.
It caused about 2 second blocking which is unacceptable.
Fix it to improve performance
wanglei828/apollo,wanglei828/apollo,ApolloAuto/apollo,ycool/apollo,jinghaomiao/apollo,ycool/apollo,jinghaomiao/apollo,ycool/apollo,xiaoxq/apollo,xiaoxq/apollo,xiaoxq/apollo,ycool/apollo,jinghaomiao/apollo,xiaoxq/apollo,wanglei828/apollo,wanglei828/apollo,ycool/apollo,ApolloAuto/apollo,jinghaomiao/apollo,ApolloAuto/apollo,ApolloAuto/apollo,jinghaomiao/apollo,xiaoxq/apollo,jinghaomiao/apollo,wanglei828/apollo,ApolloAuto/apollo,wanglei828/apollo,ApolloAuto/apollo,xiaoxq/apollo,ycool/apollo