gitops operator auto removing secret for in-cluster argocd instance

Source: https://github.com/redhat-developer/gitops-operator/issues/255

Couple of users has reported issue with operator auto removing secret for in-cluster Argo CD Instance.

Below is the description of the issue by one of the users.
```
I am following this example https://argocd-applicationset.readthedocs.io/en/stable/Generators-Cluster/#cluster-generator however this only works if you have a secret defined for the cluster you want to manage. The in-cluster cluster that comes default does not have a secret defined. To fix that, you are supposed to follow this solution https://argocd-applicationset.readthedocs.io/en/stable/Generators-Cluster/#deploying-to-the-local-cluster. That works for maybe 5 minutes, but it seems that something removes the secret. I have not located what removes the secret, but my guess is the gitops-operator-controller-manager in the openshift-operators namespace.
```

This issue has been open for a while now. rhn-support-vab, bluengop@redhat.com and rjeczkow looked into this issue and have some context about it. Please talk to them before you start working on this issue.