$ oc create -f - <<EOF
> apiVersion: apps.3scale.net/v1alpha1
> kind: APIManager
> metadata:
>   name: ci-3scale-2.5
> spec:
>   productVersion: 2.5
>   wildcardDomain: 3scale-ci-24.app.itix.fr
>   wildcardPolicy: Subdomain
>   resourceRequirementsEnabled: true
> EOF
The APIManager "ci-3scale-2.5" is invalid: []: Invalid value: map[string]interface {}{"metadata":map[string]interface {}{"selfLink":"", "clusterName":"", "name":"ci-3scale-2.5", "namespace":"ci-3scale-25", "creationTimestamp":"2019-05-20T08:07:30Z", "generation":1, "uid":"50742544-7ad6-11e9-b555-002590d83d80"}, "spec":map[string]interface {}{"productVersion":2.5, "resourceRequirementsEnabled":true, "wildcardDomain":"3scale-ci-24.app.itix.fr", "wildcardPolicy":"Subdomain"}, "apiVersion":"apps.3scale.net/v1alpha1", "kind":"APIManager"}: validation failure list:
spec.productVersion in body must be of type string: "number"

apiVersion: apps.3scale.net/v1alpha1
kind: APIManager
metadata:
  name: example-apimanager
spec:
  productVersion: "2.5"
  wildcardDomain: <wildcardDomain>
  wildcardPolicy: <None|Subdomain>
  resourceRequirementsEnabled: true