Users should be able to lookup passwords or other credential information for targets from Vault.
* We should document loading ssh private keys from vault in addition to a password example. * This will require some research around how to authenticate with Vault * Alex will try to get feedback from Ops this afternoon * Lucy will ask in office hours * The Puppet function requires you to use the Puppet CA as the Vault CA (so configure Vault to share a CA with Puppet) - this won't work for us since Bolt doesn't have a CA.