Created attachment 1296343 [details]
screens: blank property values

Description of problem:
Property values of a scheduling policy are not showing in related webadmin dialogs.
They are reported correctly via REST API so it looks like problem in the web UI.

Version-Release number of selected component (if applicable):
ovirt-engine-webadmin-portal-4.2.0-0.0.master.20170627181935.git9424f9b.el7.centos

How reproducible:
100%

Steps to Reproduce:
1. Get data of the scheduling policy 'none' via REST API:
   (Note: It is reproducible with any scheduling policy.)
   curl -u admin@internal:password -k https://engine/ovirt-engine/api/schedulingpolicies/<policyID>

   The response looks like this:
<scheduling_policy ...>
  <name>none</name>
  ...
    <property>
      <name>HighUtilization</name>
      <value>80</value>
    </property>
    <property>
      <name>CpuOverCommitDurationMinutes</name>
      <value>2</value>
    </property>
  ...
</scheduling_policy>

2. In Webadmin, go to Configure (top right corner) / Scheduling Policies and edit the 'none' policy.
3. Check the Properties section.

Actual results:
The values for properties HighUtilization and CpuOverCommitDurationMinutes are blank. See attached screenshot.

Expected results:
Values are shown in the dialog (HighUtilization=80 and CpuOverCommitDurationMinutes=2).

Additional info:

A regression against 4.1.x.
It also affects creation of a cluster, where the values are not loaded in the New Cluster dialog as well (see attached screenshot).