Add tempest gate, devstack plugin and sample devstack config

This patch adds:
 * ovn-octavia-provider-driver tempest job
 * devstack plugin


Change-Id: I42878326c3654db7a1be83f5889457c8c85117b6

devstack/plugin.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+# devstack plugin for octavia
+GET_PIP_CACHE_LOCATION=/opt/stack/cache/files/get-pip.py
+
+# [api_settings]
+#enabled_provider_drivers = amphora:'The Octavia Amphora driver.',ovn:'Octavia OVN driver.'
+
+function _configure_provider_driver {
+    iniset ${OCTAVIA_CONF} api_settings enabled_provider_drivers ${OCTAVIA_PROVIDER_DRIVERS}
+}
+
+function is_ovn_enabled {
+    [[ $NEUTRON_AGENT == "ovn" ]] && return 0
+    return 1
+}
+
+function _install_provider_driver {
+   setup_develop $OVN_OCTAVIA_PROVIDER_DIR
+}
+
+if [[ "$1" == "stack" ]]; then
+    case "$2" in
+        post-config)
+            if is_ovn_enabled; then
+                _configure_provider_driver
+            fi
+        ;;
+        install)
+            if is_ovn_enabled; then
+                _install_provider_driver
+            fi
+        ;;
+    esac
+fi

devstack/settings

@@ -0,0 +1,5 @@
+OCTAVIA_DIR=${OCTAVIA_DIR:-"${DEST}/octavia"}
+OCTAVIA_CONF_DIR=${OCTAVIA_CONF_DIR:-"/etc/octavia"}
+OCTAVIA_PROVIDER_DRIVERS=${OCTAVIA_PROVIDER_DRIVERS:-"amphora:'The Octavia Amphora driver.',ovn:'Octavia OVN driver.'"}
+
+OVN_OCTAVIA_PROVIDER_DIR=$DEST/ovn-octavia-provider

zuul.d/base.yaml

@@ -30,3 +30,103 @@
         # /opt/stack/logs is default logs directory defined in neutron's
         # tox.ini file
         '{{ devstack_base_dir }}/logs/dsvm-functional-logs': logs
+
+- job:
+    name: ovn-octavia-provider-dsvm-base
+    parent: devstack-tempest
+    timeout: 7800
+    required-projects:
+      - openstack/devstack-gate
+      - openstack/neutron
+      - openstack/octavia
+      - openstack/octavia-lib
+      - openstack/octavia-tempest-plugin
+      - openstack/python-octaviaclient
+      - openstack/ovn-octavia-provider
+    irrelevant-files:
+      - ^.*\.rst$
+      - ^api-ref/.*$
+      - ^doc/.*$
+      - ^etc/.*$
+      - ^releasenotes/.*$
+    vars:
+      devstack_localrc:
+        Q_AGENT: ovn
+        Q_ML2_PLUGIN_MECHANISM_DRIVERS: ovn,logger
+        Q_ML2_PLUGIN_TYPE_DRIVERS: local,flat,vlan,geneve
+        Q_ML2_TENANT_NETWORK_TYPE: geneve
+        USE_PYTHON3: True
+        TEMPEST_PLUGINS: '/opt/stack/octavia-tempest-plugin'
+        OCTAVIA_NODE: api
+        DISABLE_AMP_IMAGE_BUILD: true
+        OVN_L3_CREATE_PUBLIC_NETWORK: true
+        Q_USE_PROVIDERNET_FOR_PUBLIC: true
+        PHYSICAL_NETWORK: public
+        ENABLE_CHASSIS_AS_GW: true
+        OVN_DBS_LOG_LEVEL: dbg
+      devstack_local_conf:
+        post-config:
+          $OCTAVIA_CONF:
+            api_settings:
+              enabled_provider_drivers: 'ovn:OVN provider driver'
+              default_provider_driver: 'ovn'
+        test-config:
+          "$TEMPEST_CONFIG":
+            load_balancer:
+              provider: 'ovn'
+              test_with_ipv6: False
+              enable_security_groups: True
+            loadbalancer-feature-enabled:
+              health_monitor_enabled: False
+              pool_algorithms_enabled: False
+              l7_protocol_enabled: False
+              l4_protocol: "TCP"
+              session_persistence_enabled: False
+      devstack_services:
+        c-bak: false
+        ceilometer-acentral: false
+        ceilometer-acompute: false
+        ceilometer-alarm-evaluator: false
+        ceilometer-alarm-notifier: false
+        ceilometer-anotification: false
+        ceilometer-api: false
+        ceilometer-collector: false
+        c-sch: false
+        c-api: false
+        c-vol: false
+        cinder: false
+        q-svc: true
+        q-dns: true
+        q-dhcp: false
+        q-agt: false
+        q-meta: false
+        q-l3: false
+        ovn-northd: true
+        ovn-controller: true
+        q-ovn-metadata-agent: true
+        octavia: true
+        o-api: true
+        o-da: true
+        o-hk: true
+        o-cw: false
+        o-hm: false
+        swift: false
+        s-account: false
+        s-container: false
+        s-object: false
+        s-proxy: false
+        tempest: true
+        etcd: false
+      devstack_plugins:
+        neutron: https://opendev.org/openstack/neutron.git
+        octavia: https://opendev.org/openstack/octavia.git
+        octavia-tempest-plugin: https://opendev.org/openstack/octavia-tempest-plugin.git
+        ovn-octavia-provider: https://opendev.org/openstack/ovn-octavia-provider
+
+- job:
+    name: ovn-octavia-provider-v2-dsvm-scenario
+    parent: ovn-octavia-provider-dsvm-base
+    vars:
+      tempest_test_regex: ^octavia_tempest_plugin.tests.scenario.v2
+      tempest_concurrency: 2
+      tox_envlist: all

zuul.d/project.yaml

@@ -11,6 +11,9 @@
             required-projects:
               - openstack/neutron
         - ovn-octavia-provider-functional
+        - ovn-octavia-provider-v2-dsvm-scenario:
+            voting: false
     gate:
+      fail-fast: true
       jobs:
         - ovn-octavia-provider-functional