Migrate functional job to Zuul v3

Migrate functional job to zuul v3.
Migrating guideline:
https://docs.openstack.org/infra/manual/zuulv3.html
Needed-By: I611d21791d3dfd877e37fa02b5893e18b1becd76

Change-Id: If8c88568dbc6be1bb04e75a6b8b63e44f4cf7d40

.zuul.yaml

@@ -0,0 +1,21 @@
+- job:
+    name: heatclient-functional
+    parent: legacy-dsvm-base
+    run: playbooks/devstack/functional-run.yaml
+    post-run: playbooks/devstack/functional-post.yaml
+    timeout: 4200
+    required-projects:
+      - openstack-infra/devstack-gate
+      - openstack/heat
+      - openstack/python-heatclient
+    vars:
+      branch_override: "default"
+
+- project:
+    name: openstack/python-heatclient
+    check:
+      jobs:
+        - heatclient-functional
+    gate:
+      jobs:
+        - heatclient-functional

playbooks/devstack/functional-post.yaml

@@ -0,0 +1,80 @@
+- 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=**/*nose_results.html
+          - --include=*/
+          - --exclude=*
+          - --prune-empty-dirs
+
+    - 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=**/*testr_results.html.gz
+          - --include=*/
+          - --exclude=*
+          - --prune-empty-dirs
+
+    - 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=/.testrepository/tmp*
+          - --include=*/
+          - --exclude=*
+          - --prune-empty-dirs
+
+    - 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=**/*testrepository.subunit.gz
+          - --include=*/
+          - --exclude=*
+          - --prune-empty-dirs
+
+    - name: Copy files from {{ ansible_user_dir }}/workspace/ on node
+      synchronize:
+        src: '{{ ansible_user_dir }}/workspace/'
+        dest: '{{ zuul.executor.log_root }}/tox'
+        mode: pull
+        copy_links: true
+        verify_host: true
+        rsync_opts:
+          - --include=/.tox/*/log/*
+          - --include=*/
+          - --exclude=*
+          - --prune-empty-dirs
+
+    - 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/devstack/functional-run.yaml

@@ -0,0 +1,56 @@
+- hosts: all
+  name: Job for heatclient-functional
+  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_plugin heat git://git.openstack.org/openstack/heat
+          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_PROJECT_FROM_GIT=python-heatclient
+          if [ "{{ branch_override }}" != "default" ] ; then
+              export OVERRIDE_ZUUL_BRANCH=$BRANCH_OVERRIDE
+          fi
+          function post_test_hook {
+              # Configure and run functional tests
+              $BASE/new/python-heatclient/heatclient/tests/functional/hooks/post_test_hook.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 }}'