Reverse dependencies for nagios_check

Latest version of the following gems require nagios_check

Gem	Version	Date	Downloads
check_graphite +45.1 Thousand Downloads	`0.2.5` May 29, 2015	May 29, 2015	45.1 Thousand
nagios_check_resque +26.5 Thousand Downloads	`1.2.0` January 28, 2020	January 28, 2020	26.5 Thousand
check_es +9.08 Thousand Downloads	`0.0.2` May 31, 2012	May 31, 2012	9.08 Thousand
openvpn_cert_nagios +3.66 Thousand Downloads	`0.0.2` January 10, 2015	January 10, 2015	3.66 Thousand