nolabs: Switch back to single-use slave

Change-Id: I1a392317a352a2418e99d2f2b3c3daaa66e08f7a
diff --git a/jjb/nolabs/nolabs-booking-jobs.yaml b/jjb/nolabs/nolabs-booking-jobs.yaml
index ca3d952..313c53b 100644
--- a/jjb/nolabs/nolabs-booking-jobs.yaml
+++ b/jjb/nolabs/nolabs-booking-jobs.yaml
@@ -161,8 +161,8 @@
       - build-timeout:
           timeout: '{build-timeout}'
       - fix-workspace-permissions
-#      - openstack:
-#          single-use: True
+      - openstack:
+          single-use: True
 
     scm:
       - git-scm: