title: Issue with custom service systemd when start Apache Gobblin
body: <p>Running <code>/opt/gobblin/bin/gobblin-standalone.sh start</code> directly everything works, the output in logs are fine.</p>
  
  <p>Running it through a systemd service, not works. Nothing are outputting in logs.</p>
  
  <pre><code>[vagrant@localhost ~]$ sudo systemctl start gobblin
  [vagrant@localhost ~]$ sudo systemctl status gobblin
  ● gobblin.service - Gobblin Data Ingestion Framework
     Loaded: loaded (/usr/lib/systemd/system/gobblin.service; disabled; vendor preset: disabled)
     Active: failed (Result: start-limit) since Sun 2019-01-20 16:44:23 UTC; 693ms ago
       Docs: https://gobblin.readthedocs.io
    Process: 9673 ExecStop=/opt/gobblin/bin/gobblin-standalone.sh stop (code=exited, status=1/FAILURE)
    Process: 9671 ExecStart=/opt/gobblin/bin/gobblin-standalone.sh start (code=exited, status=1/FAILURE)
   Main PID: 9671 (code=exited, status=1/FAILURE)
  
  Jan 20 16:44:23 localhost.localdomain systemd[1]: gobblin.service: control process exited, code=exited status=1
  Jan 20 16:44:23 localhost.localdomain systemd[1]: Unit gobblin.service entered failed state.
  Jan 20 16:44:23 localhost.localdomain systemd[1]: gobblin.service failed.
  Jan 20 16:44:23 localhost.localdomain systemd[1]: gobblin.service holdoff time over, scheduling restart.
  Jan 20 16:44:23 localhost.localdomain systemd[1]: Stopped Gobblin Data Ingestion Framework.
  Jan 20 16:44:23 localhost.localdomain systemd[1]: start request repeated too quickly for gobblin.service
  Jan 20 16:44:23 localhost.localdomain systemd[1]: Failed to start Gobblin Data Ingestion Framework.
  Jan 20 16:44:23 localhost.localdomain systemd[1]: Unit gobblin.service entered failed state.
  Jan 20 16:44:23 localhost.localdomain systemd[1]: gobblin.service failed.
  </code></pre>
  
  <p>The code of <code>/usr/lib/systemd/system/gobblin.service</code> below:</p>
  
  <pre><code>[Unit]
  Description=Gobblin Data Ingestion Framework
  Documentation=https://gobblin.readthedocs.io
  After=network.target
  
  [Service]
  Type=simple
  User=gobblin
  Group=gobblin
  WorkingDirectory=/opt/gobblin
  ExecStart=/opt/gobblin/bin/gobblin-standalone.sh start
  ExecStop=/opt/gobblin/bin/gobblin-standalone.sh stop
  Restart=on-failure
  
  [Install]
  WantedBy=multi-user.target
  </code></pre>