OCP/Telco Definition of Done
https://docs.google.com/document/d/1TP2Av7zHXz4_fmeX4q9HB0m9cqSZ4F6Jd4AiVoaF_2s/edit#heading=h.gaa58bzbvwde
Epic Template descriptions and documentation.
https://docs.google.com/document/d/14CUCEg6hQ_jpsFzJtWo29GfFVWmun2Uivrxq3_Fkgdg/edit
ACM-wide Product Requirements (Top-level Epics)
https://docs.google.com/document/d/1uIp6nS2QZ766UFuZBaC9USs8dW_I5wVdtYF9sUObYKg/edit

*<--- Cut-n-Paste the entire contents of this description into your new
Epic --->*

Epic Goal

Refactor import controller

• Refine the logic of import and detach;
• Reuse the garbage collection logic available in the upstream repo.

Why is this important?

the cluster import/detach is the key function in RHACM and CME. and the related codes in import-controller are more complicated and not easy to maintain, and the related issues occurred and hard to address and fix. so to refactor these process can make it more easier to maintain, and improve the product qualities. 

Scenarios

cluster import :  

1. import cluster manually
2. auto import cluster.
3. provision cluster.
4. create hosted cluster.

cluster detach :

1. delete cluster and all related resources are cleaned up.
2. delete cluster and all related resources are cleaned up by force after cluster is unavailable. 
3. delete hosted cluster and all related resources are cleaned up.

Acceptance Criteria

all cluster import and detach cases can pass. 

Dependencies (internal and external)

Previous Work (Optional):

1. ...

Open questions:

1. …

Done Checklist

• CI - CI is running, tests are automated and merged.
• Release Enablement <link to Feature Enablement Presentation>
• DEV - Upstream code and tests merged: <link to meaningful PR or GitHub
  Issue>
• DEV - Upstream documentation merged: <link to meaningful PR or GitHub
  Issue>
• DEV - Downstream build attached to advisory: <link to errata>
• QE - Test plans in Polarion: <link or reference to Polarion>
• QE - Automated tests merged: <link or reference to automated tests>
• DOC - Doc issue opened with a completed template. Separate doc issue
  opened for any deprecation, removal, or any current known
  issue/troubleshooting removal from the doc, if applicable.