Updated openstack/openstack
Project: openstack-dev/pbr  886a95f8d00e8d3eb344874fbb63905aad985e41

Raise an error if preversion versions are too low

Right now the only automatic version number we have is 'last release',
but thats enough for preversioning to be invalid. When we get API and
ABI break support, this will do more useful things like telling us the
next version is not sufficiently higher.

implements: blueprint pbr-semver
sem-ver: feature
Change-Id: I2583c7409d51364ef9d84b39356d5608a95cb6f8