zuul: Replace nova-live-migration with zuulv3 jobs

This change removes the original nova-live-migration job and replaces it
directly with the new Focal based zuulv3 native job.

The nova-dsvm-multinode-base base job is no longer used and so also
removed as part of this change.

Note that this new nova-live-migration job does not yet contain any
ceph coverage like the original, this is still pending and will be
completed early in the W cycle.

This change is being merged ahead of this to resolve bug #1901739, a
known QEMU -drive issue caused by the previous jobs use of libvirt 5.4.0
as provided by Ubuntu Bionic. The fix here being the migration to Ubuntu
Focal based jobs and libvirt 6.0.0 that now defaults to using QEMU
-blockdev.

Closes-Bug: #1901739
Change-Id: Ib342e2d3c395830b4667a60de7e492d3b9de2f0a

.zuul.yaml

@@ -1,34 +1,6 @@
 # See https://docs.openstack.org/infra/manual/drivers.html#naming-with-zuul-v3
 # for job naming conventions.
 
-- job:
-    name: nova-dsvm-multinode-base
-    parent: legacy-dsvm-base-multinode
-    description: |
-      Base job for multinode nova devstack/tempest jobs.
-      Will setup firewall rules on all the nodes allowing them to talk to
-      each other.
-    timeout: 10800
-    required-projects:
-      - openstack/devstack-gate
-      - openstack/nova
-      - openstack/tempest
-    irrelevant-files: &dsvm-irrelevant-files
-      - ^api-.*$
-      - ^(test-|)requirements.txt$
-      - ^.*\.rst$
-      - ^.git.*$
-      - ^doc/.*$
-      - ^nova/hacking/.*$
-      - ^nova/locale/.*$
-      - ^nova/policies/.*$
-      - ^nova/tests/.*$
-      - ^nova/test.py$
-      - ^releasenotes/.*$
-      - ^setup.cfg$
-      - ^tools/.*$
-      - ^tox.ini$
-
 - job:
     name: nova-tox-functional-py38
     parent: openstack-tox-functional-py38
@@ -56,26 +28,27 @@
       bindep_profile: test py38
     timeout: 3600
 
-# TODO(lyarwood): Remove once the new zuulv3 nova-multinode jobs are voting
 - job:
     name: nova-live-migration
-    parent: nova-dsvm-multinode-base
-    description: |
-      Run tempest live migration tests against both local storage and shared
-      storage using ceph (the environment is reconfigured for ceph after the
-      local storage tests are run). Also runs simple evacuate tests.
-      Config drive is forced on all instances. Runs with python 3.
-    run: playbooks/legacy/nova-live-migration/run.yaml
-    post-run: playbooks/legacy/nova-live-migration/post.yaml
-    irrelevant-files: *dsvm-irrelevant-files
-
-- job:
-    name: nova-multinode-live-migration
     parent: tempest-multinode-full-py3
     description: |
       Run tempest live migration tests against local qcow2 ephemeral storage
       and shared LVM/iSCSI cinder volumes.
-    irrelevant-files: *dsvm-irrelevant-files
+    irrelevant-files: &dsvm-irrelevant-files
+      - ^api-.*$
+      - ^(test-|)requirements.txt$
+      - ^.*\.rst$
+      - ^.git.*$
+      - ^doc/.*$
+      - ^nova/hacking/.*$
+      - ^nova/locale/.*$
+      - ^nova/policies/.*$
+      - ^nova/tests/.*$
+      - ^nova/test.py$
+      - ^releasenotes/.*$
+      - ^setup.cfg$
+      - ^tools/.*$
+      - ^tox.ini$
     vars:
       tox_envlist: all
       tempest_test_regex: (^tempest\.api\.compute\.admin\.(test_live_migration|test_migration))
@@ -96,7 +69,6 @@
 #    description: |
 #      Run tempest live migration tests against ceph ephemeral storage and
 #      cinder volumes.
-
 #- job:
 #    name: nova-multinode-evacuate-ceph
 #    description: |
@@ -434,8 +406,6 @@
               - ^(?!nova/network/.*)(?!nova/virt/libvirt/vif.py).*$
         - nova-grenade-multinode
         - nova-live-migration
-        - nova-multinode-live-migration:
-            voting: false
         - nova-lvm
         - nova-multi-cell
         - nova-next