Allow Date methods for oscore cleanup job

Change-Id: I49f1a8a8561b4859e066558cb719033150110dc9
Related-Prod: https://mirantis.jira.com/browse/PROD-19628
diff --git a/jenkins/client/approved_scripts.yml b/jenkins/client/approved_scripts.yml
index d2855d8..1fb68c9 100644
--- a/jenkins/client/approved_scripts.yml
+++ b/jenkins/client/approved_scripts.yml
@@ -72,6 +72,7 @@
         - method java.util.Calendar add int int
         - method java.util.Calendar getTime
         - method java.util.Date before java.util.Date
+        - method java.text.DateFormat parse java.lang.String
         - method jenkins.model.Jenkins getItemByFullName java.lang.String
         - method jenkins.model.Jenkins getPluginManager
         - method org.jenkinsci.plugins.workflow.job.WorkflowRun doStop
@@ -94,6 +95,7 @@
         - new java.util.ArrayList
         - new java.util.Date
         - new java.util.HashMap
+        - new java.text.SimpleDateFormat java.lang.String java.util.Locale
         - staticField groovy.io.FileType FILES
         - staticMethod com.cloudbees.plugins.credentials.CredentialsProvider lookupCredentials java.lang.Class hudson.model.ItemGroup
         - staticMethod java.lang.Double parseDouble java.lang.String