Re-introduce gate_hook.sh in zunclient

The script gate_hook.sh was removed at Zun side [1] as part of
the effort for migrating to zuul v3 native job. However, zunclient
still need this script and the removal causes the failure of the
CI. This patch re-introduce the script at zunclient as a temporary
fix. The long-term fix is to migrate the job to zuul v3 native
as well.

[1] https://review.openstack.org/#/c/512209/

Change-Id: I93a4ec8804e74e17c478f2ee2ecf9b3402fcbd3f

playbooks/zunclient-devstack-docker-sql/run.yaml

@@ -58,8 +58,8 @@
           export KEEP_LOCALRC=1
 
           function gate_hook {
-               cd /opt/stack/new/zun/
-              ./zun/tests/contrib/gate_hook.sh docker sql
+              cd /opt/stack/new/python-zunclient/
+              ./zunclient/tests/functional/hooks/gate_hook.sh docker sql
           }
           export -f gate_hook
 

zunclient/tests/functional/hooks/gate_hook.sh

@@ -0,0 +1,50 @@
+#!/bin/bash -x
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# This script is executed inside gate_hook function in devstack gate.
+
+
+# Keep all devstack settings here instead of project-config for easy
+# maintain if we want to change devstack config settings in future.
+
+driver=$1
+db=$2
+
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"enable_plugin kuryr-libnetwork https://git.openstack.org/openstack/kuryr-libnetwork"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"enable_plugin devstack-plugin-container https://git.openstack.org/openstack/devstack-plugin-container"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"ZUN_USE_UWSGI=True"
+export DEVSTACK_LOCAL_CONFIG+=$'\n'"KURYR_CONFIG_DIR=/etc/kuryr-libnetwork"
+export DEVSTACK_GATE_TEMPEST=1
+export DEVSTACK_GATE_TEMPEST_ALL_PLUGINS=1
+export DEVSTACK_GATE_TEMPEST_REGEX="zun_tempest_plugin.tests.tempest.api"
+
+if [ "$driver" = "docker" ]; then
+    export DEVSTACK_LOCAL_CONFIG+=$'\n'"ZUN_DRIVER=docker"
+fi
+
+if [ "$db" = "etcd" ]; then
+    export DEVSTACK_LOCAL_CONFIG+=$'\n'"ZUN_DB_TYPE=etcd"
+    export DEVSTACK_LOCAL_CONFIG+=$'\n'"KURYR_ETCD_PORT=2379"
+elif [ "$db" = "sql" ]; then
+    export DEVSTACK_LOCAL_CONFIG+=$'\n'"ZUN_DB_TYPE=sql"
+fi
+
+$BASE/new/devstack-gate/devstack-vm-gate.sh
+gate_retval=$?
+
+# Copy over docker systemd unit journals.
+mkdir -p $WORKSPACE/logs
+sudo journalctl -o short-precise --unit docker | sudo tee $WORKSPACE/logs/docker.txt > /dev/null
+
+exit $gate_retval