Story (Required)

As a user of appset trying to delete an applicationset when 'create-only' policy is in place, I want the managed applications to not get deleted

Background (Required)

Currently there seems to be a bug in Argo CD. When applicationset-controller is supplied with `–policy create-only` command, appset can only create applications, and not do any further modifications to them or delete them. However, if you were to delete the applicaitonset resource the child applications get deleted anyway. 

_see https://github.com/argoproj/argo-cd/issues/12172_

Out of scope

Approach (Required)

Reproduce issue locally
if successfully reproduced, refine controller logic to react to finalizer placed on appset - on appset deletion controller should remove owner references from all child apps before appset is deleted 

Dependencies

none

Acceptance Criteria (Mandatory)

when appset-controller has `–policy create-only` specified, users should be able to delete appset without having the child applications deleted as well 

INVEST Checklist

Dependencies identified

Blockers noted and expected delivery timelines set

Design is implementable

Acceptance criteria agreed upon

Story estimated

Legend

Unknown

Verified

Unsatisfied

Done Checklist

• Code is completed, reviewed, documented and checked in
• Unit and integration test automation have been delivered and running cleanly in continuous integration/staging/canary environment
• Continuous Delivery pipeline(s) is able to proceed with new code included
• Customer facing documentation, API docs etc. are produced/updated, reviewed and published
• Acceptance criteria are met