Monitor: Warn on GPS instability instead of Error.
Monitor: Warn on GPS instability instead of Error.

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