Travis CI: Fix test maven target (i.e. do not install and do not cache built artefacts)
Travis CI: Fix test maven target (i.e. do not install and do not cache built artefacts)

rhusar/clusterbench,rhusar/clusterbench,Karm/clusterbench,clusterbench/clusterbench,mmadzin/clusterbench,Karm/clusterbench,clusterbench/clusterbench,mmadzin/clusterbench