Description of problem:
The adoption controller failed to adopt an already existing (and appears to already have been adopted) Subscription when generating the adoption metadata.Labels:

```
{"level":"error","ts":1634738113.834287,"logger":"controllers.adoption","msg":"Error adopting Subscription","request":"openshift-special-resource-operator/sro-operator-subscription","error":"Subscription.operators.coreos.com \"sro-operator-subscription\" is invalid: metadata.labels: Invalid value: \"operators.coreos.com/openshift-special-resource-operator.openshift-special-resource-\": name part must consist of alphanumeric characters, '-', '_' or '.', and must start and end with an alphanumeric character (e.g. 'MyName',  or 'my.name',  or '123-abc', regex used for validation is '([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9]')","stacktrace":"sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Reconcile\n\t/build/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:114\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/build/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:311\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/build/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:266\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2\n\t/build/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:227"}
```

Link to a CI job that contains more context: https://prow.ci.openshift.org/view/gs/origin-ci-test/pr-logs/pull/openshift-kni_cnf-features-deploy/750/pull-ci-openshift-kni-cnf-features-deploy-master-e2e-gcp-ran-profile/1450809562331353088

Version-Release number of selected component (if applicable):
4.9

How reproducible:
Unknown

Steps to Reproduce:
1.
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Actual results:


Expected results:


Additional info: