zuul: Add devstack-plugin-ceph-compute-local-ephemeral job

This job covers the popular usecase of not using rbd for ephemeral
storage for nova while it is used for Glance and Cinder.

This job additionally enables the recently implemented direct download
of rbd hosted Glance images into the file based ephemeral store of Nova.

Change-Id: Ieddd803fccb097657fffe30ef87c1c8385e7eb28

.zuul.yaml

@@ -113,6 +113,27 @@
       devstack_localrc:
         ENABLE_VOLUME_MULTIATTACH: true
 
+- job:
+    name: devstack-plugin-ceph-compute-local-ephemeral
+    parent: devstack-plugin-ceph-tempest-py3-base
+    description: |
+      Integration tests that runs with the ceph devstack plugin and py3.
+
+      This job does not configure Nova to use rbd for ephemeral storage. It
+      also enables the direct download of images via rbd into the local
+      imagecache for Nova.
+    vars:
+      devstack_local_conf:
+        post-config:
+          $NOVA_CONF:
+            glance:
+              enable_rbd_download: True
+              rbd_user: glance
+              rbd_ceph_conf: /etc/ceph/ceph.conf
+              rbd_pool: images
+            libvirt:
+              images_type: default
+
 - job:
     name: devstack-plugin-ceph-tempest-ussuri-py3
     parent: devstack-plugin-ceph-tempest-py3
@@ -174,3 +195,4 @@
         - devstack-plugin-ceph-tempest-ussuri-py3
         - devstack-plugin-ceph-tempest-train-py3
         - devstack-plugin-ceph-tempest-stein-py3
+        - devstack-plugin-ceph-compute-local-ephemeral