use JRUBY + full JAVA env for tests
refactor commands and arguments processing to allow spaces in paths
Fix Date#Timestamp link
removed dependency on bash
leftover
Merge pull request #1316 from colinsurprenant/spaceinpath

support for spaces in dir path of logstash installation
Fix beaker node files due to variable name change
Also add improved tests
Merge pull request #1333 from electrical/package_acceptance_fix

Fix beaker node files due to variable name change
Merge pull request #1332 from coolacid/LOGSTASH-2166

Fix Date#Timestamp link