Hot reload of customGroups not working

[vigohe]

Describe the bug

When you change the ConfigMap jwt-to-rbac at the level of customGroups at runtime, this changes doesn't applied.

This is because this conditions will be always nil because ClusterRole or ClusterRoleBinding already exists.

jwt-to-rbac/pkg/rbachandler/rbac_handler.go

Lines 248 to 250 in bb2185d

	if err := rh.getAndCheckCRoleBinding(crb.name); err == nil {
	return nil
	}

jwt-to-rbac/pkg/rbachandler/rbac_handler.go

Lines 331 to 333 in bb2185d

	if err := rh.getAndCheckCRole(cr.name); err == nil {
	return nil
	}

Steps to reproduce the issue:
Change something at customGroups level

Expected behavior

When someone change something at customGroups the ClusterRole & ClusterRoleBinding changes should be reflected