Add Patrole gate job for stable/ussuri

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

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

Change-Id: I4ad6f84c71733b0bcc76d97493aa403d8c38de74
diff --git a/.zuul.yaml b/.zuul.yaml
index 040e548..c29399e 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -94,6 +94,11 @@
         RBAC_TEST_ROLES: reader
 
 - job:
+    name: patrole-member-ussuri
+    parent: patrole-member
+    override-checkout: stable/ussuri
+
+- job:
     name: patrole-member-train
     parent: patrole-member
     override-checkout: stable/train
@@ -200,6 +205,7 @@
         - patrole-admin
         - patrole-member
         - patrole-reader
+        - patrole-member-ussuri
         - patrole-member-train
         - patrole-member-stein
         - patrole-multinode-admin
@@ -212,5 +218,6 @@
         - patrole-member
     periodic-stable:
       jobs:
+        - patrole-member-ussuri
         - patrole-member-train
         - patrole-member-stein