Add multiple NICs per VM support to VMSS create

[gbowerman]

Description

Please add support for multiple NICs per VM to the VMSS create command. Syntax is the same as for regular VMs, i.e. add multiple networkConfigurations[] entries..

You can have up to 8 NICs per VM depending on VM size. The following is an example scale set networkProfile showing multiple nic entries:

"networkProfile": {
    "networkInterfaceConfigurations": [
        {
        "name": "nic1",
        "properties": {
            "primary": "true",
            "ipConfigurations": [
            {
                "name": "ip1",
                "properties": {
                "subnet": {
                    "id": "[concat('/subscriptions/', subscription().subscriptionId,'/resourceGroups/', resourceGroup().name, '/providers/Microsoft.Network/virtualNetworks/', variables('vnetName'), '/subnets/subnet1')]"
                },
                "publicipaddressconfiguration": {
                    "name": "pub1",
                    "properties": {
                    "idleTimeoutInMinutes": 15
                    }
                },
                "loadBalancerInboundNatPools": [
                    {
                    "id": "[concat('/subscriptions/', subscription().subscriptionId,'/resourceGroups/', resourceGroup().name, '/providers/Microsoft.Network/loadBalancers/', variables('lbName'), '/inboundNatPools/natPool1')]"
                    }
                ],
                "loadBalancerBackendAddressPools": [
                    {
                    "id": "[concat('/subscriptions/', subscription().subscriptionId,'/resourceGroups/', resourceGroup().name, '/providers/Microsoft.Network/loadBalancers/', variables('lbName'), '/backendAddressPools/addressPool1')]"
                    }
                ]
                }
            }
            ]
        }
        },
        {
        "name": "nic2",
        "properties": {
            "primary": "false",
            "ipConfigurations": [
            {
                "name": "ip1",
                "properties": {
                "subnet": {
                    "id": "[concat('/subscriptions/', subscription().subscriptionId,'/resourceGroups/', resourceGroup().name, '/providers/Microsoft.Network/virtualNetworks/', variables('vnetName'), '/subnets/subnet1')]"
                },
                "publicipaddressconfiguration": {
                    "name": "pub1",
                    "properties": {
                    "idleTimeoutInMinutes": 15
                    }
                },
                "loadBalancerInboundNatPools": [
                    {
                    "id": "[concat('/subscriptions/', subscription().subscriptionId,'/resourceGroups/', resourceGroup().name, '/providers/Microsoft.Network/loadBalancers/', variables('lbName'), '/inboundNatPools/natPool1')]"
                    }
                ],
                "loadBalancerBackendAddressPools": [
                    {
                    "id": "[concat('/subscriptions/', subscription().subscriptionId,'/resourceGroups/', resourceGroup().name, '/providers/Microsoft.Network/loadBalancers/', variables('lbName'), '/backendAddressPools/addressPool1')]"
                    }
                ]
                }
            }
            ]
        }
        }
    ]
}

[yugangw-msft]

Per discussion, move to a later milestone till we have more user asks on this

[yugangw-msft]

Will reactivate it till we have more user asks on this. It is hard to fit 2 dimensions of configuration in a single command line. Users might be better to use deployment templates

//CC: @gatneil,