Clean up playground happy stacks #53

Job	Run time
Find examples	7s
Clean rdev happy stacks (ecs_test_app)	22s
Clean staging happy stacks (ecs_test_app)	21s
Clean rdev happy stacks (gpu_app)	42s
Clean prod happy stacks (ecs_test_app)	20s
Clean rdev happy stacks (image_pipeline)	20s
Clean staging happy stacks (gpu_app)	40s
Clean prod happy stacks (gpu_app)	43s
Clean rdev happy stacks (integration_test)	55s
Clean staging happy stacks (image_pipeline)	20s
Clean prod happy stacks (image_pipeline)	20s
Clean rdev happy stacks (integration_test_helm)	44s
Clean staging happy stacks (integration_test)	51s
Clean prod happy stacks (integration_test)	48s
Clean rdev happy stacks (nodejs_downstream)	21s
Clean staging happy stacks (integration_test_helm)	44s
Clean prod happy stacks (integration_test_helm)	42s
Clean rdev happy stacks (sidecar)	20s
Clean staging happy stacks (nodejs_downstream)	20s
Clean prod happy stacks (nodejs_downstream)	26s
Clean rdev happy stacks (sidecar_with_ssl)	20s
Clean staging happy stacks (sidecar)	20s
Clean prod happy stacks (sidecar)	25s
Clean rdev happy stacks (target_group_only)	20s
Clean staging happy stacks (sidecar_with_ssl)	20s
Clean prod happy stacks (sidecar_with_ssl)	27s
Clean rdev happy stacks (tasks)	20s
Clean staging happy stacks (target_group_only)	20s
Clean prod happy stacks (target_group_only)	26s
Clean staging happy stacks (tasks)	21s
Clean prod happy stacks (tasks)	26s
Clean staging happy stacks (typical_app)	22s
Clean rdev happy stacks (typical_app)	21s
Clean prod happy stacks (typical_app)	25s
	15m 39s

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