It is not listing the subnet while creating load balancers

[musharani]

Subnet is not listing while creating the load balancers though it has subnets.

Contrail-build: ocata-5.0-173
contrail-command: 5.0-173

Steps to repro:
==============
1. Create a vn with a subnet 10.10.10.0/24
2. Then go to Services->Load Balancers->Create Load Balancer.
3. Select the subnet.

It is showing No data while selecting the subnet though it is having the subnet 10.10.10.0/24

In old ui also it is loading while selecting the subnet. The below error is seen in old UI console

Old UI console:
===============
thirdparty.libs.js?built_at=1533264651:2608 Uncaught TypeError: Cannot read property 'toUpperCase' of undefined
    at F (thirdparty.libs.js?built_at=1533264651:2608)
    at Object.formatResult (thirdparty.libs.js?built_at=1533264651:2609)
    at h (thirdparty.libs.js?built_at=1533264651:2608)
    at d.populateResults (thirdparty.libs.js?built_at=1533264651:2608)
    at d.<anonymous> (thirdparty.libs.js?built_at=1533264651:2609)
    at Object.callback (thirdparty.libs.js?built_at=1533264651:2608)
    at Object.query (core.bundle.js?built_at=1533264651:45951)
    at d.updateResults (thirdparty.libs.js?built_at=1533264651:2609)
    at d.opening (thirdparty.libs.js?built_at=1533264651:2609)
    at d.open (thirdparty.libs.js?built_at=1533264651:2608)