Disabling --pluginpath for logstash 1.5

[maoo]

Actually it disables it for all versions but 1.4 ... ruby code can be improved, before sending PR

Related to #421

[davidski]

Careful, 1.5.3 reintroduces the pluginpath option. https://www.elastic.co/blog/logstash-1-5-3-and-1-4-4-released

FYI - the current master, with a few tweaks (reference #418) works for me without any problem with current Logstash releases.

[maoo]

Thank you @davidski for the pointers, I got Logstash 1.5.3 working using master branch (so I'll close this PR)

Though I still can't install plugins; the following syntax is not working for me:

include_recipe 'logstash::server'
logstash_plugins 'logstash-output-elasticsearch-ec2' do
  instance "server"
  action [:create]
end

The following command doesn't return anything

/opt/logstash/server/bin/plugin list | grep ec2

Though the Chef resource is processed, as I find the following on chef logs:

[2015-07-24T09:38:04+01:00] INFO: Processing logstash_plugins[logstash-output-elasticsearch-ec2] action create (img-logging::logstash line 6)