Merge pull request #48 from nixwiz/fix_frozen_string_literal

Fixed frozen_string_literal issues

Author: Jef Spaleta

CHANGELOG.md

@@ -7,6 +7,9 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 ## [Unreleased]
 
+### Changed
+- Fixed frozen_string_literal issues
+
 ## [2.0.1] - 2020-03-06
 
 ### Changed

bin/check-haproxy.rb

@@ -1,5 +1,5 @@
 #! /usr/bin/env ruby
-# frozen_string_literal: true
+# frozen_string_literal: false
 
 #
 #   check-haproxy.rb

bin/metrics-haproxy.rb

@@ -1,5 +1,5 @@
 #! /usr/bin/env ruby
-# frozen_string_literal: true
+# frozen_string_literal: false
 
 #
 #   metrics-haproxy.rb
@@ -39,10 +39,10 @@ class HAProxyMetrics < Sensu::Plugin::Metric::CLI::Graphite
   # Check http://cbonte.github.io/haproxy-dconv/1.7/management.html#9.1 for
   # haproxy stats CSV format.
 
-  TYPE_FRONTEND = '0'
-  TYPE_BACKEND = '1'
-  TYPE_SERVER = '2'
-  TYPE_LISTENER = '3'
+  TYPE_FRONTEND = '0'.freeze
+  TYPE_BACKEND = '1'.freeze
+  TYPE_SERVER = '2'.freeze
+  TYPE_LISTENER = '3'.freeze
   # All fields are listed here for ease of long term maintenance.
   # Format: field_index => %w(haproxy-name friendly-name)
   CSV_FIELDS = {