Add example to use EC2 instance managed draining #71

Job	Run time
Module max TF version	5s
Get root directories	2s
Min TF validate (.)	18s
Min TF validate (./examples/complete-ecs)	28s
Min TF validate (./examples/easy/ec2)	21s
Min TF validate (./examples/easy/ec2-managed-draining)	17s
Min TF validate (./examples/easy/fargate-spot)	19s
Min TF validate (./examples/easy/ec2-distinct)	19s
Min TF validate (./examples/easy/fargate)	32s
Min TF validate (./examples/easy/fargate-alb)	35s
Min TF validate (./examples/easy/ec2-alb)	19s
Min TF validate (./modules/scheduled-actions)	17s
Min TF validate (./modules/iam/ecs-instance-profile)	20s
Min TF validate (./modules/simple/ec2)	21s
Min TF validate (./modules/simple/fargate-spot)	20s
Min TF validate (./modules/simple/fargate)	20s
Min TF validate (./modules/core/ecs-autoscaling-target)	21s
Min TF validate (./modules/core/task)	23s
Min TF validate (./modules/core/service)	20s
Min TF validate (./modules/autoscaling/ecs-target-tracking/service-utilization)	22s
Min TF validate (./modules/autoscaling/ecs-scheduled)	33s
Min TF validate (./modules/autoscaling/asg-target-tracking/ecs-reservation)	23s
Min TF validate (./modules/autoscaling/alb-target-tracking/target-requests-count)	26s
Min TF validate (./modules/autoscaling/alb-target-tracking/target-response-time)	33s
Max TF pre-commit (1.7.4)	9s
	8m 43s

Provide feedback