Important Tutorial-OpenStack and OpenStack Profile Change

For security reasons, we have changed the CloudLab-provided OpenStack profiles to modify the way root login is handled on the VMs brought up by OpenStack.  This also affects most other OpenStack profiles on CloudLab (those that use our OpenStack setup scripts). Note that this change does not affect CloudLab profiles that do not use OpenStack.

Password login is no longer allowed for the "root" account. If you need to log in directly to your VMs as root, you will need to use an ssh keypair. Password login is still allowed for the 'ubuntu' account, so if you do not have a keypair set up, you may use that account instead.