Add approvy script to allow use SubnetUtils

Change-Id: I1b445b08a1343017af2693821f79461a1ec64cca
Related-Prod: PROD-29112 (PROD:29112)
diff --git a/jenkins/client/approved_scripts.yml b/jenkins/client/approved_scripts.yml
index bcdd9bc..753a4b6 100644
--- a/jenkins/client/approved_scripts.yml
+++ b/jenkins/client/approved_scripts.yml
@@ -91,6 +91,7 @@
         - method org.jenkinsci.plugins.workflow.support.actions.EnvironmentAction getEnvironment
         - method org.jenkinsci.plugins.workflow.support.steps.build.RunWrapper build
         - method org.jenkinsci.plugins.workflow.support.steps.build.RunWrapper getRawBuild
+        - method org.apache.commons.net.util.SubnetUtils getInfo
         - new groovy.json.JsonBuilder
         - new groovy.json.JsonBuilder java.lang.Object
         - new groovy.json.JsonSlurperClassic