Upgrade architecture refactoring

- In edeploy/metadata are the metadata for edeploy role upgrade
- In tests/roles_provision are tools for testing an upgrade
- In upgrade/ are tools (playbook) to update a SF instance
- Set vars in group_vars/all
- All tasks are moved to tasks/ and included in site.yml
- Remove the role notion for now.

Change-Id: If05f35c5abf4a58978afb8288b0eb8bf441dd375