logstash-plugins/logstash-output-elasticsearch — pull request #26 by talevy (2014-12-02 00:05:30+00:00)
Title: rename apache license string to match maven-tools format for apache-2.0

maven-tools is only happy with certain license strings: https://github.com/torquebox/maven-tools/blob/master/lib/maven/tools/licenses.rb#L8

so here is the change