Add restore-backup functionality for keystone credential keys

Related-Prod: PROD-35496
Change-Id: I7637051330548f8ea7739e46a491873e73be5260
diff --git a/jenkins/client/job/deploy/backupninja_restore.yml b/jenkins/client/job/deploy/backupninja_restore.yml
index 76a594e..14c28ac 100644
--- a/jenkins/client/job/deploy/backupninja_restore.yml
+++ b/jenkins/client/job/deploy/backupninja_restore.yml
@@ -30,3 +30,6 @@
             RESTORE_DOGTAG:
               type: boolean
               default: 'true'
+            RESTORE_KEYSTONE_CREDENTIAL_KEYS:
+              type: boolean
+              default: 'true'