logstash 2.2.2
logstash 2.2.2

This commit upgrades the logstash formula from version 2.2.1 to 2.2.2,
the latest stable version of Logstash as of 2015-02-17. This patch
release of Logstash contains an important security fix to address an
issue where Logstash was vulnerable to a man-in-the-middle attack.

Closes #49291.

Signed-off-by: Dominyk Tiller <53e438f55903875d07efdd98a8aaf887e7208dd3@gmail.com>

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