Migrate tempest-dsvm-multinode-live-migration job in-tree

This defines the nova-live-migration job, based on the
tempest-dsvm-multinode-live-migration job from openstack-zuul-jobs.

The branch override parts of the job definition are removed since
the job will be defined per-branch now.

Conflicts:
      .zuul.yaml

NOTE(mriedem): The conflict is due to not having job
nova-tox-functional-py35 in stable/ocata.

Change-Id: Idea86d6bb648b1e6fef8813dbe569724ce81a750
(cherry picked from commit 7d8246244d)
(cherry picked from commit 0db59f7172)
(cherry picked from commit a4adf3b7a3)

.zuul.yaml

@@ -1,3 +1,31 @@
+- 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-infra/devstack-gate
+      - openstack/nova
+      - openstack/tempest
+    irrelevant-files:
+      - ^(placement-)?api-.*$
+      - ^(test-|)requirements.txt$
+      - ^.*\.rst$
+      - ^.git.*$
+      - ^doc/.*$
+      - ^nova/hacking/.*$
+      - ^nova/locale/.*$
+      - ^nova/tests/.*$
+      - ^releasenotes/.*$
+      - ^setup.cfg$
+      - ^tests-py3.txt$
+      - ^tools/.*$
+      - ^tox.ini$
+    nodeset: legacy-ubuntu-xenial-2-node
+
 - job:
     name: nova-tox-functional
     parent: openstack-tox
@@ -16,11 +44,19 @@
       tox_envlist: functional
     timeout: 3600
 
+- job:
+    name: nova-live-migration
+    parent: nova-dsvm-multinode-base
+    run: playbooks/legacy/nova-live-migration/run.yaml
+    post-run: playbooks/legacy/nova-live-migration/post.yaml
+
 - project:
     name: openstack/nova
     check:
       jobs:
+        - nova-live-migration
         - nova-tox-functional
     gate:
       jobs:
+        - nova-live-migration
         - nova-tox-functional

playbooks/legacy/nova-live-migration/post.yaml

@@ -0,0 +1,15 @@
+- hosts: primary
+  tasks:
+
+    - name: Copy files from {{ ansible_user_dir }}/workspace/ on node
+      synchronize:
+        src: '{{ ansible_user_dir }}/workspace/'
+        dest: '{{ zuul.executor.log_root }}'
+        mode: pull
+        copy_links: true
+        verify_host: true
+        rsync_opts:
+          - --include=/logs/**
+          - --include=*/
+          - --exclude=*
+          - --prune-empty-dirs

playbooks/legacy/nova-live-migration/run.yaml

@@ -0,0 +1,43 @@
+- hosts: primary
+  name: nova-live-migration
+  tasks:
+
+    - name: Ensure legacy workspace directory
+      file:
+        path: '{{ ansible_user_dir }}/workspace'
+        state: directory
+
+    - shell:
+        cmd: |
+          set -e
+          set -x
+          cat > clonemap.yaml << EOF
+          clonemap:
+            - name: openstack-infra/devstack-gate
+              dest: devstack-gate
+          EOF
+          /usr/zuul-env/bin/zuul-cloner -m clonemap.yaml --cache-dir /opt/git \
+              git://git.openstack.org \
+              openstack-infra/devstack-gate
+        executable: /bin/bash
+        chdir: '{{ ansible_user_dir }}/workspace'
+      environment: '{{ zuul | zuul_legacy_vars }}'
+
+    - shell:
+        cmd: |
+          set -e
+          set -x
+          export PYTHONUNBUFFERED=true
+          export DEVSTACK_GATE_CONFIGDRIVE=0
+          export DEVSTACK_GATE_TEMPEST=1
+          export DEVSTACK_GATE_TEMPEST_NOTESTS=1
+          export DEVSTACK_GATE_TOPOLOGY="multinode"
+          function post_test_hook {
+              /opt/stack/new/nova/nova/tests/live_migration/hooks/run_tests.sh
+          }
+          export -f post_test_hook
+          cp devstack-gate/devstack-vm-gate-wrap.sh ./safe-devstack-vm-gate-wrap.sh
+          ./safe-devstack-vm-gate-wrap.sh
+        executable: /bin/bash
+        chdir: '{{ ansible_user_dir }}/workspace'
+      environment: '{{ zuul | zuul_legacy_vars }}'