The current HPCloud boilerplate:
## https://juju.ubuntu.com/docs/config-hpcloud.html
hpcloud:
type: openstack
# Specifies whether the use of a floating IP address is required to give the nodes
# a public IP address. Some installations assign public IP addresses by default without
# requiring a floating IP address.
use-floating-ip: false
admin-secret: 83932e6894e7d0a0fd1ce801aeb1b06a
# Globally unique swift bucket name
control-bucket: juju-220fb8814d6619683017bfb95df939a2
# Not required if env variable OS_AUTH_URL is set
auth-url: https://region-a.geo-1.identity.hpcloudsvc.com:35357/v2.0/
doesn't contain enough of a framework to get people started - i.e, auth method and required keys for whichever they choose.