Add Tempest gate job for stable/zed

Now we have stable/zed branch ready for devstack and so does
for all service projects.

This commit adds the Tempest testing for stable/zed by adding
new jobs running on stable/zed version of openstack.

Change-Id: I6a331a6f2466aa4e4d9f607660b87fa60a63bf4b
diff --git a/zuul.d/stable-jobs.yaml b/zuul.d/stable-jobs.yaml
index d1445c0..6d97fad 100644
--- a/zuul.d/stable-jobs.yaml
+++ b/zuul.d/stable-jobs.yaml
@@ -1,5 +1,10 @@
 # NOTE(gmann): This file includes all stable release jobs definition.
 - job:
+    name: tempest-full-zed
+    parent: tempest-full-py3
+    override-checkout: stable/zed
+
+- job:
     name: tempest-full-yoga
     parent: tempest-full-py3
     override-checkout: stable/yoga
@@ -15,6 +20,11 @@
     override-checkout: stable/wallaby
 
 - job:
+    name: tempest-slow-zed
+    parent: tempest-slow-py3
+    override-checkout: stable/zed
+
+- job:
     name: tempest-slow-yoga
     parent: tempest-slow-py3
     override-checkout: stable/yoga