update addons fails with Error: creating ChangeSet "updating-policy" AlreadyExistsException

[greenu]

What were you trying to accomplish?

Update VPC CNI addon with
eksctl update addon

What happened?
Error: creating ChangeSet "updating-policy" for stack "eksctl-mycluster-addon-vpc-cni": AlreadyExistsException: ChangeSet updating-policy cannot be created due to a mismatch with existing attribute Tags

How to reproduce it?
Create cluster with addons. Then try to update addons.

eksctl update addon
This command succeeds but "eksctl-mycluster-addon-vpc-cni" stack now has failed ChangeSet "updating-policy" with error:
"The submitted information didn't contain changes. Submit different information to create a change set."

All subsequent runs of "eksctl update addon" with SAME eksctl version (nothing to update) succeed,
but all runs of NEWER eksctl versions (real update) fail with:
Error: creating ChangeSet "updating-policy" for stack "eksctl-mycluster-addon-vpc-cni": AlreadyExistsException: ChangeSet updating-policy cannot be created due to a mismatch with existing attribute Tags
unless you manually delete failed "updating-policy".
Update to same version creates failed change set again.

Anything else we need to know?
I'm pretty sure it's the same as #3604 but for addons.

Versions
eksctl version: 0.58.0
kubectl version: v1.20.4-dirty
OS: darwin

Also reproducible on 0.62.0

[aclevername]

Thanks for opening the issue @greenu. your right that it looks very similar to #3604, I think doing the same fix made in #3605 but for addons should resolve the problem.

[aclevername]

Opened a PR to fix #4116