Permission issue with heat.

While deploying a vnf with autoscaling, heat translator failed with
premission denied error. This issue occured because [1] opening file
in root dir (i.e. '/'), due to which it giving permission denied.
Fixing it by setting current working dir as '/temp'

[1]: https://github.com/openstack/heat-translator/blob/master/translator/hot/tosca_translator.py#L69

Change-Id: Ib2b0fd6c4c32a523b9fb25f47eae19225b84439f
Closes-bug: #1749394

devstack/lib/tacker

@@ -154,7 +154,9 @@ function start_tacker {
     # Start tacker conductor
     run_process tacker-conductor "$TACKER_BIN_DIR/tacker-conductor $cfg_file_options"
     # Start the Tacker service
-    run_process tacker "$TACKER_BIN_DIR/tacker-server $cfg_file_options"
+    sudo cp $TACKER_DIR/etc/systemd/system/tacker.service /etc/systemd/system/devstack@tacker.service
+    sudo systemctl daemon-reload
+    sudo systemctl restart devstack@tacker.service
     echo "Waiting for Tacker to start..."
     if is_ssl_enabled_service "tacker"; then
         ssl_ca="--ca-certificate=${SSL_BUNDLE_FILE}"

doc/source/install/manual_installation.rst

@@ -247,6 +247,23 @@ If you are using keystone v2 then,
 
 ..
 
+10). To support systemd, copy tacker.service file to "/etc/systemd/system/"
+directory, and restart systemctl daemon.
+
+.. code-block:: console
+
+   sudo su
+   cp etc/systemd/system/tacker.service /etc/systemd/system/
+   systemctl daemon-reload
+
+..
+
+.. note::
+
+   Needs systemd support.
+   By default Ubuntu16.04 onward is supported.
+..
+
 
 Install Tacker client
 =====================

etc/systemd/system/tacker.service

@@ -0,0 +1,12 @@
+[Unit]
+Description = OpenStack tacker service
+
+[Service]
+ExecReload = /bin/kill -HUP $MAINPID
+TimeoutStopSec = 300
+KillMode = process
+WorkingDirectory = /tmp
+ExecStart=/usr/local/bin/tacker-server --config-file /etc/tacker/tacker.conf
+
+[Install]
+WantedBy = multi-user.target

tacker/tests/functional/vnfm/test_tosca_vnf_scale.py

@@ -13,7 +13,6 @@
 
 import json
 import time
-import unittest
 
 from oslo_config import cfg
 
@@ -27,7 +26,6 @@ CONF = cfg.CONF
 
 
 class VnfTestToscaScale(base.BaseTackerTest):
-    @unittest.skip("Skip and wait for releasing Heat Translator")
     def test_vnf_tosca_scale(self):
         data = dict()
         data['tosca'] = read_file('sample-tosca-scale-all.yaml')