Direct bridge to be setup

The multinode jobs are failing because the br-infra bridge
is not being setup. It is not being setup because somewhere
in the infra, the multi-node-bridge role is never established
as a requirement. Realistically, only ironic does this, but
we need to ensure it is present.

Change-Id: Ia1dcc68d7e75a931e01829ce23da36c978a70765

playbooks/ci-workarounds/pre.yaml

@@ -1,5 +1,5 @@
 - hosts: all
-  name: Copy ssh keys from too ~stack
+  name: Pre-setup tasks
   tasks:
     - shell:
         cmd: |
@@ -11,3 +11,5 @@
           sudo chmod 700 ~stack/.ssh
           sudo chown -R stack ~stack
         executable: /bin/bash
+  roles:
+    - multi-node-bridge

zuul.d/ironic-jobs.yaml

@@ -305,7 +305,7 @@
     name: ironic-tempest-ipa-wholedisk-direct-tinyipa-multinode
     description: ironic-tempest-ipa-wholedisk-direct-tinyipa-multinode
     parent: tempest-multinode-full
-    pre-run: playbooks/ci-workarounds/set-stack-key.yaml
+    pre-run: playbooks/ci-workarounds/pre.yaml
     timeout: 10800
     required-projects:
       - openstack/ironic
@@ -326,6 +326,8 @@
       - ^setup.cfg$
       - ^tools/.*$
       - ^tox.ini$
+    roles:
+      - zuul: opendev.org/zuul/zuul-jobs
     vars:
       tox_envlist: all
       tempest_concurrency: 4