Fixed success output due to output from compile script

* src/lib/jboss/jmxinvoke_deploy/buildinvoke.sh
  src/lib/jboss/jmxinvoke_deploy/invkdeploy.sh
  -- The JBoss output triggered an error state in the deployer.
  This is kind of a hacky workaround though.
* src/core/utility.py
  -- Clarified method comment
Merge branch 'dev' of https://github.com/hatRiot/clusterd into dev