feat: open issues updated based on ongoing discussions

Author: gerrnot

hips/hip-9999.md

@@ -88,7 +88,9 @@ None
 - [ ] HIP status `accepted'
 - [x] Reference implementation
 - [x] Test for concurrent upgrade (valid lock should still block concurrent upgrade attempts)
-- [ ] Test for kill scenario (forever stuck in pending)
+- [x] Test for upgrading from pending state
+- [x] Test for upgrading from failed state
+- [ ] Decision: k8s Lease object vs helm relesae secret for storing the `LOCKED TILL` and `SESSION ID`
 - [ ] Backwards compatibility check (looking good already)
 https://github.com/rancher/rancher/issues/44530
 https://github.com/helm/helm/issues/11863