Description of problem:
When creating a storage domain, navigating to the iSCSI storage type leads to a ui exception.

Version-Release number of selected component (if applicable):
2e694e8bfc032d3916777c203991d6fe8dbfe726

How reproducible:
100%

Steps to Reproduce:
1. Open the New Domain window.
2. Navigate to iSCSI Storage Type.

Actual results:
UI exception:
2017-11-16 12:07:55,975+02 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-34) [] Permutation name: 759EF86A90021DBE4D71F55FDA2D7B3B
2017-11-16 12:07:55,975+02 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-34) [] Uncaught exception: com.google.gwt.event.shared.UmbrellaException: Exception caught: (TypeError) : a.d.d.u is undefined
	at java.lang.Throwable.Throwable(Throwable.java:70) [rt.jar:1.8.0_151]
	at java.lang.RuntimeException.RuntimeException(RuntimeException.java:32) [rt.jar:1.8.0_151]
	at com.google.web.bindery.event.shared.UmbrellaException.UmbrellaException(UmbrellaException.java:64) [gwt-servlet.jar:]
	at com.google.gwt.event.shared.UmbrellaException.UmbrellaException(UmbrellaException.java:25) [gwt-servlet.jar:]
	at com.google.gwt.event.shared.HandlerManager.$fireEvent(HandlerManager.java:117) [gwt-servlet.jar:]
	at com.google.gwt.user.client.ui.Widget.$fireEvent(Widget.java:127) [gwt-servlet.jar:]
	at com.google.gwt.user.client.ui.Widget.fireEvent(Widget.java:127) [gwt-servlet.jar:]
	at com.google.gwt.event.logical.shared.ValueChangeEvent.fire(ValueChangeEvent.java:40) [gwt-servlet.jar:]
	at org.ovirt.engine.ui.common.widget.editor.ListModelListBox.$lambda$2(ListModelListBox.java:251)
	at org.ovirt.engine.ui.common.widget.editor.ListModelListBox$lambda$2$Type.execute(ListModelListBox.java:251)
	at com.google.gwt.core.client.impl.SchedulerImpl.runScheduledTasks(SchedulerImpl.java:167) [gwt-servlet.jar:]
	at com.google.gwt.core.client.impl.SchedulerImpl.$flushPostEventPumpCommands(SchedulerImpl.java:338) [gwt-servlet.jar:]
	at com.google.gwt.core.client.impl.SchedulerImpl$Flusher.execute(SchedulerImpl.java:76) [gwt-servlet.jar:]
	at com.google.gwt.core.client.impl.SchedulerImpl.execute(SchedulerImpl.java:140) [gwt-servlet.jar:]
	at com.google.gwt.core.client.impl.Impl.apply(Impl.java:236) [gwt-servlet.jar:]
	at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) [gwt-servlet.jar:]
	at Unknown.Ku/<(http://ishaby1.tlv.redhat.com:8080/ovirt-engine/webadmin/?locale=en_US#storage)
	at Unknown.d(http://ishaby1.tlv.redhat.com:8080/ovirt-engine/webadmin/?locale=en_US#storage)
	at Unknown.anonymous(Unknown)
Caused by: com.google.gwt.core.client.JavaScriptException: (TypeError) : a.d.d.u is undefined
	at org.ovirt.engine.ui.common.widget.uicommon.storage.SanStorageLunToTargetList.$initRootNodeTable(SanStorageLunToTargetList.java:208)
	at org.ovirt.engine.ui.common.widget.uicommon.storage.SanStorageLunToTargetList.createHeaderWidget(SanStorageLunToTargetList.java:65)
	at org.ovirt.engine.ui.common.widget.uicommon.storage.AbstractSanStorageList.AbstractSanStorageList(AbstractSanStorageList.java:65)
	at org.ovirt.engine.ui.common.widget.uicommon.storage.SanStorageLunToTargetList.SanStorageLunToTargetList(SanStorageLunToTargetList.java:50)
	at org.ovirt.engine.ui.common.widget.uicommon.storage.IscsiLunToTargetView.$edit(IscsiLunToTargetView.java:42)
	at org.ovirt.engine.ui.common.widget.uicommon.storage.IscsiStorageView.$edit(IscsiStorageView.java:94)
	at org.ovirt.engine.ui.common.widget.uicommon.storage.IscsiStorageView.edit(IscsiStorageView.java:94)
	at org.ovirt.engine.ui.webadmin.section.main.view.popup.storage.StoragePopupView.$revealStorageView(StoragePopupView.java:257)
	at org.ovirt.engine.ui.webadmin.section.main.view.popup.storage.StoragePopupView$lambda$1$Type.eventRaised(StoragePopupView.java:229)
	at org.ovirt.engine.ui.uicompat.Event.$raise(Event.java:99)
	at org.ovirt.engine.ui.uicommonweb.models.ListModel.$setSelectedItem(ListModel.java:81)
	at org.ovirt.engine.ui.webadmin.section.main.view.popup.storage.StoragePopupView_availableStorageTypeItems_selectedItem_Context.$setInModel(StoragePopupView_availableStorageTypeItems_selectedItem_Context.java:19)
	at org.ovirt.engine.ui.webadmin.section.main.view.popup.storage.StoragePopupView_availableStorageTypeItems_selectedItem_Context.setInModel(StoragePopupView_availableStorageTypeItems_selectedItem_Context.java:19)
	at org.ovirt.engine.ui.common.editor.UiCommonEditorVisitor.$setInModel(UiCommonEditorVisitor.java:147)
	at org.ovirt.engine.ui.common.editor.UiCommonEditorVisitor.$lambda$0(UiCommonEditorVisitor.java:59)
	at org.ovirt.engine.ui.common.editor.UiCommonEditorVisitor$lambda$0$Type.onValueChange(UiCommonEditorVisitor.java:59)
	at com.google.gwt.event.logical.shared.ValueChangeEvent.dispatch(ValueChangeEvent.java:127) [gwt-servlet.jar:]
	at com.google.gwt.event.shared.GwtEvent.dispatch(GwtEvent.java:76) [gwt-servlet.jar:]
	at com.google.web.bindery.event.shared.SimpleEventBus.$doFire(SimpleEventBus.java:173) [gwt-servlet.jar:]
	... 15 more