Include <resource>/finalizers permission in default scaffold

[joelanford]

When deploying operators to clusters that have the OwnerReferencesPermissionEnforcement admission controller enabled, I want my operator to work without having to figure out why I get an error like this:

"deployments.apps \"memcached-sample\" is forbidden: cannot set blockOwnerDeletion if an ownerReference refers to a resource you can't set finalizers on: , <nil>"

I think this could be solved by including the following in the default controller scaffold:

// +kubebuilder:rbac:groups=<group>.<domain>,resources=<resource>/finalizers,verbs=get;update;patch

/kind feature

[prafull01]

/assign