Comment 7 for bug 1361843

Incompatible changes in rb-site command line like this are prone to causing issues with the charm. This can be avoided by having (RB) version specific invocations, but that's something I'm hoping to avoid (maintenance nightmare).

Given upstream have acknowledged the issue, I'm tempted to turn this bug into a wishlist item for such a feature (e.g. juju set reviewboard version=2.0.4)