Update ApiVersion of CRDs to v1

This JIRA is for to update all CRDs in the 3scale operator to use apiVersion apiextensions.k8s.io/v1 instead of apiextensions.k8s.io/v1beta1

Example on v1beta1: https://github.com/3scale/3scale-operator/blob/master/deploy/crds/apps.3scale.net_apimanagers_crd.yaml#L1

This should be done for all CRDs - https://github.com/3scale/3scale-operator/tree/master/deploy/crds

The reason for this ask is because the apiextensions.k8s.io/v1beta1 will be removed completely in k8s 1.22 (OpenShift 4.9) which is to be released on July 23rd 2021.

• OLM has support for v1 CRDs in 4.5.
• OCP has support for v1 CRDs in 4.3.

There is a good thread on the operatorframwork-pm list titled "Updating apiVersion of our CRDs to v1" from Sebastian on this topic.