Description:

Install into existing VPC cannot work on new UI wizard

How reproducible:

100%

Steps:

1. Launch OCM staging env
2. Open OSD creation wizard
3. Select CCS
4. Select "Install into an existing VPC" on networking 
5. Set some values of the subnets
6. Check the Review page
7. Create cluster and check the payload of the request

Actual result:

The network will show "Basic" even set the vpc subnet value

and

The payload doesn't including the subnet info in the request body

Expect result:

The Networking on review page should show the detailed settings

and

The payload should be correct in the request when set vpc subnets.