Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1338964
Description of problem:

Selecting the vmware cluster throws a traceback

2016-05-23 14:18:15 [app] [W] Action failed
 | NoMethodError: undefined method `summary' for #<RbVmomi::VIM::Folder:0x007fe1f2510208>
 | /opt/theforeman/tfm/root/usr/share/gems/gems/fog-vsphere-0.6.3/lib/fog/vsphere/requests/compute/list_clusters.rb:35:in `cluster_attributes'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/fog-vsphere-0.6.3/lib/fog/vsphere/requests/compute/get_cluster.rb:8:in `get_cluster'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/fog-vsphere-0.6.3/lib/fog/vsphere/models/compute/clusters.rb:17:in `get'
 | /usr/share/foreman/app/models/compute_resources/foreman/model/vmware.rb:53:in `cluster'
 | /usr/share/foreman/app/models/compute_resources/foreman/model/vmware.rb:101:in `resource_pools'
 | /usr/share/foreman/app/models/compute_resources/foreman/model/vmware.rb:122:in `available_resource_pools'
 | /usr/share/foreman/app/controllers/compute_resources_controller.rb:116:in `resource_pools'
 | /opt/rh/rh-ror41/root/usr/share/gems/gems/actionpack-4.1.5/lib/action_controller/metal/implicit_render.rb:4:in `send_action'

Version-Release number of selected component (if applicable):
 sat62-snap12.1

How reproducible:

Steps to Reproduce:
 1. Add vmware compute resource
 2. while creating a "new host" 
 3. populate the cluster under the "virtual machine" tab

Actual results:
| NoMethodError: undefined method `summary' for #<RbVmomi::VIM::Folder:0x007fe1f2510208>

Also the spinner is seen continuously at the top most locatio near to "Red Hat Satellite".

as seen in /var/log/foreman/production.log

Expected results:
 No traceback and no continuous spinner should be seen while provisioning.

Note: The NoMethodError issue seems to be already resolved,
 but spinner does not seem to disapper when it should.