Add /var/lib/logstash

Fixes #2160

Fixes #2162
Fix acceptance tests

Fixes #2166
Update to master release

Fixes #2166
More fixes

Fixes #2166
move plugins gemfile to tools

Fixes #2171
set correct env in bootstrap to avoid dup gems

Fixes #2171
pin maven-tools version due to bug

Fixes #2171
minor fixes to moving plugins gemfile to tools/

Fixes #2171