Jumpbox VM deployed to agent subnet

[erandermsft]

The jumpbox VM NIC gets deployed to the agent subnet:

(from main.bicep)

var varDeployJumpVm = deployToggles.?jumpVm ?? false
var varJumpVmMaintenanceConfigured = varDeployJumpVm && (jumpVmMaintenanceDefinition != null)
var varJumpSubnetId = empty(resourceIds.?virtualNetworkResourceId!)
  ? '${virtualNetworkResourceId}/subnets/agent-subnet'
  : '${resourceIds.virtualNetworkResourceId!}/subnets/agent-subnet'

[mbilalamjad]

@placerda could you please help review this