Add asBoolean to approved groovy scripts

Add asBoolean() for java.util.regex.Matcher function to approved
groovy scripts. This is used by custompatches job.

Change-Id: I817ced50a29934ad13ca6a1200ec6e56003c5008
diff --git a/jenkins/client/approved_scripts.yml b/jenkins/client/approved_scripts.yml
index 6afd67e..12a7e9f 100644
--- a/jenkins/client/approved_scripts.yml
+++ b/jenkins/client/approved_scripts.yml
@@ -99,6 +99,7 @@
         - staticMethod java.util.regex.Pattern quote java.lang.String
         - staticMethod java.util.stream.Collectors joining java.lang.CharSequence
         - staticMethod jenkins.model.Jenkins getInstance
+        - staticMethod org.codehaus.groovy.runtime.DefaultGroovyMethods asBoolean java.util.regex.Matcher
         - staticMethod org.codehaus.groovy.runtime.DefaultGroovyMethods collect java.util.Map groovy.lang.Closure
         - staticMethod org.codehaus.groovy.runtime.DefaultGroovyMethods eachFile java.io.File groovy.io.FileType groovy.lang.Closure
         - staticMethod org.codehaus.groovy.runtime.DefaultGroovyMethods find java.util.Collection groovy.lang.Closure