Application selection in metric does not work

[Tony-Mc]

• What Grafana version are you using?
  v4.1.1

• What Zabbix version are you using?
  v2.0.6

• What zabbix plugin version are you using?
  v3.2.0

• What OS are you running grafana on?
  Docker Grafana image

• What did you do?
  I set up a metric for application called "MyApp".
  

• What was the expected result?
  It should have displayed metric for selected application ("MyApp").

• What happened instead?
  Stats for that metric were not displayed because application was not found (I also tried regexp instead of name).

As far as I debugged this issue the problem is that Zabbix datasource does not include expandData flag in application.get request for Zabbix versions 2.0-2.2. Due to that name field is not returned, making search by name or regexp impossible.

[alexanderzobnin]

Fixed by #462