check-zookeeper-mode isn't working

[Albex]

The check to verify the mode of a node is not working. The code used to send the four letter word is not correct hence the result of the request is empty.
This is the only script that uses a different strategy to send the request. You should perhaps unify the scripts.

[majormoses]

Thanks for bringing this up, I would be more than happy to review a PR to fix that and bring things more inline with the way the other checks work. pinging @fsniper as he is probably the most active contributor to this plugin.

[fsniper]

I just checked my installed instance (1.4.0) and the check seems to be working correctly.

/opt/sensu/embedded/bin/check-zookeeper-mode.rb -s localhost -p 2181 -m master
CheckZookeeperMode CRITICAL: Zookeeper mode is follower and it does not match master /opt/sensu/embedded/bin/check-zookeeper-mode.rb -s localhost -p 2181 -m follower
CheckZookeeperMode OK: follower