Added an install sub command to the apt-get command.
Remove database user and table creation steps; these will come later.
Changed instance of Grizzly to Havana.
Added a -y to the apt-get install command.
Updated the database and DB user creation step; cleaned up prose before editing keystone.conf to reflect that the settings need to match what will be added to the database.
Run the Keystone DB initialization task first before restarting Keystone.
Make the setting of admin_token in keystone.conf its own explicit step instead of including it in the editing of keystone.conf that sets the DB connection settings.
Refactored Keystone section.