I'm using the C7.2 GenericCloud image with KVM and am trying to inject my own ssh key by adding it to /etc/cloud/cloud.cfg.d:

sudo virt-customize --upload ~/local/cloud/20_centos_sshkey.cfg:/etc/cloud/cloud.cfg.d/20_centos_sshkey.cfg -d c7-template

Contents of the file:

#cloud-config

ssh_authorized_keys:
- ssh-rsa [mysshkeyhere]

The good news is that it puts something in the authorized_keys file (which does not occur without it). The bad news is it's complete garbage (from guestfish) -- http://pastebin.centos.org/42526/

Any suggestion on either how to fix this or a better way to inject the key for this usage?