Skip the throttling interval validation test unless throttling is enabled
Skip the throttling interval validation test unless throttling is enabled

Co-authored-by: Mario Nitchev <57ff50f6ddd5ceca6cfb80c4da981adc6ad05ef5@gmail.com>

cloudfoundry-incubator/guardian,cloudfoundry-incubator/guardian,cloudfoundry-incubator/guardian