Restore the Cinder job's 3 hours timeout

Change-Id: I28d1960fe6596153ad6de6a4e8701aef8340b5c4
diff --git a/zuul.d/sp-cinder.yaml b/zuul.d/sp-cinder.yaml
index 6802452..917f689 100644
--- a/zuul.d/sp-cinder.yaml
+++ b/zuul.d/sp-cinder.yaml
@@ -11,7 +11,7 @@
       - opendev.org/openstack/cinder-tempest-plugin
       # - config
       - sp-osci
-    timeout: 3600
+    timeout: 10800
     vars:
       devstack_localrc:
         CINDER_ENABLED_BACKENDS: storpool:storpool