Is your feature request related to a problem? Please describe.
We would like to apply kube2iam roles to pods in solrcloud statefulset. The role will allow access to s3 for backups.

Snippet of what is needed

spec:
  template:
    metadata:
      annotations:
        iam.amazonaws.com/role: role-arn

Describe the solution you'd like

The ability to add any spec/template/metadata annotation for developers to request