Description of problem:
'Load balancers' on the cluster detail page is shown 'N/A' when it is 0

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

How reproducible:
always

Steps to Reproduce:
1. Log in OCM portal and prepare one ready cluster with 0 load balancer
2. Go to the cluster detail page

Actual results:
2. It is shown 'N/A' in the 'Load balancers' field

Expected results:
2. It should be shown as '0'

Additional info: