Update rollback documentation

[ironcladlou]

Note that you can still supply a deployment name (for backwards compatibility), but I don't see a good reason to promote that in the latest docs.

[ironcladlou]

cc @adellape

[adellape]

@ironcladlou I take it this is as of openshift/origin#3643 in Origin, and wouldn't make it into OSE until 3.0.1 at the earliest?

Also, to verify for --to-version, are the "version" numbers equivalent to the Deployment #1, Deployment #2, etc reported when describing a dc? So for example if Deployment #3 was currently active, to roll back to Deployment #2 you'd use --to-version=2?

[ironcladlou]

@adellape

@ironcladlou I take it this is as of openshift/origin#3643 in Origin, and wouldn't make it into OSE until 3.0.1 at the earliest?

Oops, yeah. I should have linked that in.

Also, to verify for --to-version, are the "version" numbers equivalent to the Deployment #1, Deployment #2, etc reported when describing a dc? So for example if Deployment #3 was currently active, to roll back to Deployment #2 you'd use --to-version=2?

That's correct.