Require json in utils.rb.

[zroger]

Without it, load_config simply returns an empty hash for everything, which in turn makes it so that settings is always empty.

You can see this behavior in a minimal check plugin that attempts to include utils without also requiring json.

require 'sensu-plugin/check/cli'
require 'sensu-plugin/utils'

class JsonCheck < Sensu::Plugin::Check::CLI
  include Sensu::Plugin::Utils

  def run
    if settings['api'].nil?
      critical 'Settings not loaded.'
    else
      ok settings['api']
    end
  end
end

[cwjohnston]

@zroger makes sense to me, thanks!