Removed check for /etc/redhat-release in check-process-restart.rb, as this file is not available on some Red Hat derivatives such as Amazon Linux.
Removed check for /etc/redhat-release in check-process-restart.rb, as this file is not available on some Red Hat derivatives such as Amazon Linux.

tomduckering/sensu-plugins-process-checks,sensu-plugins/sensu-plugins-process-checks,tomduckering/sensu-plugins-process-checks,sensu-plugins/sensu-plugins-process-checks,sensu-plugins/sensu-plugins-process-checks,tomduckering/sensu-plugins-process-checks