Major Description
If the first thing we do is a 'mvn clean', then it fails because in htrace-htraced it calls go/gobuild.sh clean. The ant runner expects all prerequisites to be built – e.g. htrace-core – so we fail with cryptic message (to test clean out your ~/.m2/repository/org/apache/htrace and then run mvn clean).
Also, we get warning when build starts about missing version. Fix.
I want these fixes in as part of debugging the docker build. I need to be able to do a mvn clean first.