Introduce gate_hook.sh in zunclient

Zunclient is using the script gate_hook.sh located at Zun side.
However, this script causes the failure of the CI.
This patch copies the script to zunclient and modifies it to disable
devstack gate tempest to fix the CI.

Change-Id: I93a4ec8804e74e17c478f2ee2ecf9b3402fcbd3f
(cherry picked from commit d6448c622b)

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 +1,48 @@
+#!/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+=$'\n'"KURYR_CONFIG_DIR=/etc/kuryr-libnetwork"
+export DEVSTACK_GATE_TEMPEST=0
+
+if [ "$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