ZuulV3 jobs

This patch set removes legacy-* jobs and migrates
tempest functional job to ZuulV3 syntax.

Change-Id: I87771737cc713eae20b4d6aaaefefc5e40875666
Implements: blueprint migrate-to-zuulv3

playbooks/orchestrate-tempest.yaml

@@ -0,0 +1,14 @@
+- hosts: all
+  # This is the default strategy, however since orchestrate-devstack requires
+  # "linear", it is safer to enforce it in case this is running in an
+  # environment configured with a different default strategy.
+  strategy: linear
+  roles:
+    - orchestrate-devstack
+
+- hosts: tempest
+  roles:
+    - setup-tempest-run-dir
+    - setup-tempest-data-dir
+    - acl-devstack-files
+    - run-tempest

playbooks/pre.yaml

@@ -0,0 +1,3 @@
+- hosts: all
+  roles:
+    - add-hostnames-to-hosts