Open Stack

Hi guys,

I would like to open a discussion related to OpenStack upgrades ( I mean
moving from one version to another, for example Havana to Icehouse).

As you probably know, this is a big issue, since there is no silver
bullet to do it. For that reason, I am thinking  in an option to provide
more input prior to do an upgrade.

The idea is to generate an interoperability matrix, where devops can see
if an specific commit works with all the available OpenStack versions,
distinguishing among the different components. For example, you could
see if  the Nova X commit is or not backward compatible with the
Grizzly/Havana/Icehouse versions of Keystone/Neutron/Cinder/...

Do you think this matrix would be useful in the upgrade tasks? 

Thanks!

Best Regards,
Pablo Andres Fuente