Migrate legacy scenario job to tempest in-tree

"legacy-tempest-dsvm-neutron-scenario-multinode-lvm-multibackend" job
is tempest job which run all scenario tests including slow tests
and migration tests as non voting job.

This commit migrate this job to tempest in-tree and later we can
modify this to zuulv3 native.

This is first step to make slow tests running on tempest as voting
and on project side also.

Details- http://lists.openstack.org/pipermail/openstack-dev/2018-May/130418.html

Change-Id: I6bc7503347ca2f110e4a0a5b404e612168b3a417
diff --git a/playbooks/tempest-scenario-multinode-lvm-multibackend/run.yaml b/playbooks/tempest-scenario-multinode-lvm-multibackend/run.yaml
new file mode 100644
index 0000000..03f64f9
--- /dev/null
+++ b/playbooks/tempest-scenario-multinode-lvm-multibackend/run.yaml
@@ -0,0 +1,65 @@
+- hosts: primary
+  name: Autoconverted job tempest-scenario-multinode-lvm-multibackend
+    from old job gate-tempest-dsvm-neutron-scenario-multinode-lvm-multibackend-ubuntu-xenial-nv
+  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
+          cat << 'EOF' >>"/tmp/dg-local.conf"
+          [[local|localrc]]
+          ENABLE_IDENTITY_V2=False
+          TEMPEST_USE_TEST_ACCOUNTS=True
+          # Enable lvm multiple backends to run multi backend slow scenario tests.
+          # Note: multi backend experimental job exclude the slow scenario tests.
+          CINDER_ENABLED_BACKENDS=lvm:lvmdriver-1,lvm:lvmdriver-2
+
+          EOF
+        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_TEMPEST=1
+          # Run scenario and nova migration tests with concurrency 2
+          export DEVSTACK_GATE_TEMPEST_REGEX='(^tempest\.(scenario|api\.compute\.admin\.test_(live_|)migration))'
+          export TEMPEST_CONCURRENCY=2
+          export DEVSTACK_GATE_NEUTRON=1
+          export DEVSTACK_GATE_TLSPROXY=1
+          export BRANCH_OVERRIDE=default
+          if [ "$BRANCH_OVERRIDE" != "default" ] ; then
+              export OVERRIDE_ZUUL_BRANCH=$BRANCH_OVERRIDE
+          fi
+          export DEVSTACK_GATE_TOPOLOGY="multinode"
+
+          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 }}'