Remove unused zero-downtime job

zero-downtime job is used only in nova experimental pipeline
which is going to be removed now (depends-on).

This job is failing 100% https://zuul.opendev.org/t/openstack/builds?job_name=legacy-grenade-dsvm-neutron-multinode-zero-downtime

Depends-On: https://review.opendev.org/#/c/741603/
Change-Id: Iabb6bc307cae3f03d6aa52c4a1af2d9756a5f04e

playbooks/legacy/grenade-dsvm-neutron-multinode-zero-downtime/post.yaml

@@ -1,15 +0,0 @@
-- 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/grenade-dsvm-neutron-multinode-zero-downtime/run.yaml

@@ -1,52 +0,0 @@
-- hosts: primary
-  name: Autoconverted job legacy-grenade-dsvm-neutron-multinode-zero-downtime from
-    old job gate-grenade-dsvm-neutron-multinode-zero-downtime-ubuntu-xenial
-  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/devstack-gate
-              dest: devstack-gate
-          EOF
-          /usr/zuul-env/bin/zuul-cloner -m clonemap.yaml --cache-dir /opt/git \
-              https://opendev.org \
-              openstack/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_NEUTRON=1
-          export DEVSTACK_GATE_CONFIGDRIVE=0
-          export DEVSTACK_GATE_GRENADE=pullup
-          export DEVSTACK_GATE_USE_PYTHON3=False
-          export PROJECTS="openstack/grenade $PROJECTS"
-          # Default to non DVR
-          export DEVSTACK_GATE_NEUTRON_DVR=0
-          export BRANCH_OVERRIDE=default
-          if [ "$BRANCH_OVERRIDE" != "default" ] ; then
-              export OVERRIDE_ZUUL_BRANCH=$BRANCH_OVERRIDE
-          fi
-          export DEVSTACK_GATE_TOPOLOGY="multinode"
-          function post_test_hook {
-              /opt/stack/new/nova/nova/tests/zero_downtime/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 }}'

zuul.d/zuul-legacy-jobs.yaml

@@ -104,17 +104,6 @@
       - openstack/devstack-gate
       - openstack/neutron
 
-- job:
-    name: legacy-grenade-dsvm-neutron-multinode-zero-downtime
-    parent: legacy-dsvm-base-multinode
-    run: playbooks/legacy/grenade-dsvm-neutron-multinode-zero-downtime/run.yaml
-    post-run: playbooks/legacy/grenade-dsvm-neutron-multinode-zero-downtime/post.yaml
-    timeout: 10800
-    required-projects:
-      - openstack/grenade
-      - openstack/devstack-gate
-      - openstack/neutron
-
 - job:
     name: legacy-group-based-policy-dsvm-aim
     parent: legacy-dsvm-base