Rubocop fixes
Rubocop fixes

portertech/sensu-plugins-memory-checks,sge-babrams/sensu-plugins-memory-checks,scalp42/sensu-plugins-memory-checks,scalp42/sensu-plugins-memory-checks,sensu-plugins/sensu-plugins-memory-checks,sensu-plugins/sensu-plugins-memory-checks,sge-babrams/sensu-plugins-memory-checks,portertech/sensu-plugins-memory-checks