Add fix to vault init script to restart prometheus statefulset

Fix for nightly pipeline failures. Prometheus statefulset is timing out. We recently got our vault init job script working in CI. We expect prometheus is waiting for the vault init job to complete and isn't getting the signal that it's completed. Added a command to the vault init script to restart prometheus statefulset on completion

• add updates to init script to restart prometheus sts.
• Also add job role and role binding for access to cluster statefulsets