Merge branch 'branch-0.5.0' into 'branch-0.5.0'

cpplint

See merge request megasearch/milvus!696

Former-commit-id: 329145a9c96527b0bb7a54fce65e9f063dda540a

cpp/src/scheduler/TaskTable.h

@@ -149,7 +149,6 @@ class TaskTable {
     }
 
  public:
-
     std::deque<TaskTableItemPtr>::iterator
     begin() {
         return table_.begin();