fix(bundle): declare com.redhat.openshift.versions for OpenShift cert (#90)

fix(bundle): declare com.redhat.openshift.versions=v4.15 for OpenShift cert

Author: stubbi

bundle/metadata/annotations.yaml

@@ -5,3 +5,4 @@ annotations:
   operators.operatorframework.io.bundle.package.v1: "paperclip-operator"
   operators.operatorframework.io.bundle.channels.v1: "stable"
   operators.operatorframework.io.bundle.channel.default.v1: "stable"
+  com.redhat.openshift.versions: "v4.15"