zuul: add tripleo jobs

Import the new jobs from tripleo-ci, with parity from what we had before
with legacy jobs:
- buildimage jobs
- ovb-ha

Change-Id: If93f9f3b6df1dec4c6edef43f6c5f126eeac8a32

.zuul.d/jobs.yaml

@@ -1,5 +1,7 @@
 - project:
     name: openstack/diskimage-builder
+    templates:
+      - tripleo-buildimage-jobs
     check:
       jobs:
         - dib-dsvm-functests-python2-ubuntu-trusty:
@@ -47,6 +49,9 @@
             irrelevant-files:
               - ^.*\.rst$
               - ^doc/.*$
+    check-tripleo:
+      jobs:
+        - tripleo-ci-centos-7-ovb-ha-oooq
 
     gate:
       jobs:
@@ -63,6 +68,7 @@
             irrelevant-files:
               - ^.*\.rst$
               - ^doc/.*$
+        - tripleo-buildimage-overcloud-full-centos-7
 
 - job:
     name: dib-dsvm-functests-python2-centos-7