Ignore Accessor error in role index
Ignore Accessor error in role index

Problem:
If an object does not implement the correct interface the binding
indexer will error and no rbac changes will be processed

Solution:
Dont return the error because the indexer only gives back valid objects
anyways so this will allow rbac changes to continue despite an invalid
object in the cache

rancher/rancher,rancher/rancher,rancher/rancher,rancher/rancher,rancherio/rancher,rancherio/rancher