WIP Port the legacy Tempest job to Zuul v3

Change-Id: I87be8cb0857a2d83182b4943a11c8bc2191c4b1a

.zuul.yaml

@@ -9,6 +9,8 @@
     check:
       jobs:
         - sqlalchemy-migrate-tox-py27sa07
+        - sqlalchemy-migrate-tempest-full:
+            voting: false
         - sqlalchemy-migrate-devstack:
             voting: false
     gate:
@@ -25,6 +27,14 @@
     vars:
       tox_envlist: py27sa07
 
+- job:
+    name: sqlalchemy-migrate-tempest-full
+    parent: tempest-full
+    timeout: 10800
+    required-projects:
+      - opendev.org/openstack/tempest
+      - opendev.org/x/sqlalchemy-migrate
+
 - job:
     name: sqlalchemy-migrate-devstack
     parent: legacy-dsvm-base