Resource Orchestration Service - ROS - Fixed the resource dependency issue when removing ROS stacks
1. The automatic status check when creating ECS instances is removed in InstanceGroup. 2. The automatic status check when creating ECS instances is removed in SLB. 3. The issue of unexpected errors occurred while removing ROS stacks, which is caused by ECS timeout when deleting, is fixed. 4. When a connection error occurs, the Resource Access Management (RAM) service initiates retry requests.