Shared VPC issue during build

[fbiagio]

Hi, it's not possible to use a sharedVPC network in workflow "rhel_9_byos.wf.json" + "ISP_enterprise_linux.wf.json"

In the run-installer-prep step I already add section NetworkInterfaces.[Network

`
...
...
...
"CreateInstances": [
{
"Name": "inst-installerprep",
"NetworkInterfaces" : [{
"Network": "projects/prj-XXXXXXXX-001/regions/europe-west3/subnetworks/sub-XXXXXXX-core-ew3"}],

...
...
...
`

Unfortunatly we obtain the error below
[Daisy] Errors in one or more workflows: build-rhel-9-byos: step "build-rhel" validation error: step "run-installer-prep" validation error: missing reference for network "