Automatic deletion of successfully completed AppWrappers after successTTLDuration

Name of Feature or Improvement

Delete successfully completed AppWrappers after successTLLDuration

Description of Problem the Feature Should Solve

Currently when successTLLDuration expires a successfully completed AppWrapper
deletes the wrapped resources, but the AppWrapper itself is not deleted.

Users have requested a complete cleanup (similar to Job) where after successTLLDurartion
expires, the AppWrapper is also automatically deleted by the system.

Describe the Solution You Would Like to See

I would propose implementing this guarded by an operator-level configuration. It would default to
enabled, but could be disabled via the configuration for a cluster by a batch-admin. An alternative would
be to support per-AppWrapper annotations to allow opt-out (or opt-in), but there isn't a strong demand
for keeping successfully completed AppWrappers around indefinitely on clusters where the normal
case is to clean them up