Since the merging of I6713469bfbd4fe9fc47d3cb2d3571fe10871f34e and
I0496f4dd2026ab6c705683126c8f50302a0861b9, the default role includes a
basic full cloud deployment and creates a clouds.yaml for the root user.
Update the documentation to include this information and how to leverage
the clouds.yaml.
Change-Id: I2c31e80000e55e70db26c24147e349d8ccd4d273
Related-Blueprint: all-in-one
1f053673ef