Remove -dirty suffix from git describe
Remove -dirty suffix from git describe

The maven-release-plugin seems to use dirty working directories for
every build, so the dirty flag ends up pretty meaningless.

zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform