Failed upgrades should output list of full commands to run

[Byron McCollum]

Currently, a failed upgrade will output the playbooks that need to be manually run. It would be helpful to add the `openstack-ansible` command in front of these playbook names, as well as any other options being passed, such as `pip_install_options=--force-reinstall`, which is being added by the upgrade script.

I encountered a failure during the `os-nova-install.yml` playbook, and upon running the next playbook manually, `os-heat-install.yml`, there were pip install errors, as the `pip_install_options=--force-reinstall` was lost.

[Byron McCollum (byron-mccollum)]

The old way this was handled was by inserting the `pip_install_options` into a throwaway user variables file for the life of the upgrade.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: kilo
Review: https://review.openstack.org/237689

[OpenStack Infra (hudson-openstack)]

Change abandoned by Nolan Brubaker (<email address hidden>) on branch: kilo
Review: https://review.openstack.org/237689
Reason: The downstream project I knew of that used the run-upgrade-old.sh has since moved off of it, and Kilo is now in a relatively stable state, with EOL not far off. Given those two things, I'm going to abandon this change, at least for Kilo.