[device/virtual]: Add device type of SONiC VM

[Pterosaur]

Signed-off-by: Ze Gan ganze718@gmail.com

Why I did it

The default ethernet port naming style is Ethernet0, Ethernet4...Ethernet(i*4) which isn't compatible with EOS's style Ethernet1,Ethernet2...Etherent(i+1)
SONiC-mgmt usually use EOS as neighbor devices. To relieve the compatible issue on SONiC as neighbor devices, This PR introduces a new SKU SONiC VM.

How I did it

Create a new SKU with ethernet port naming style Ethernet(i+1)

How to verify it

Run sonic-cfggen -p /usr/share/sonic/device/x86_64-kvm_x86_64-r0/SONiC-VM/port_config.ini -k SONiC-VM --print-data in SONiC VM
You should get the following output

{
    "DEVICE_METADATA": {
        "localhost": {
            "hwsku": "SONiC-VM"
        }
    },
    "PORT": {
        "Ethernet1": {
            "lanes": "25,26,27,28",
            "alias": "fortyGigE0/0",
            "index": "0",
            "speed": "40000"
        },
        "Ethernet2": {
            "lanes": "29,30,31,32",
            "alias": "fortyGigE0/4",
            "index": "1",
            "speed": "40000"
        },
        "Ethernet3": {
            "lanes": "33,34,35,36",
            "alias": "fortyGigE0/8",
            "index": "2",
            "speed": "40000"
        },
        "Ethernet4": {
            "lanes": "37,38,39,40",
            "alias": "fortyGigE0/12",
            "index": "3",
            "speed": "40000"
        },
        "Ethernet5": {
            "lanes": "45,46,47,48",
            "alias": "fortyGigE0/16",
            "index": "4",
            "speed": "40000"
        },
        "Ethernet6": {
            "lanes": "41,42,43,44",
            "alias": "fortyGigE0/20",
            "index": "5",
            "speed": "40000"
        },
        "Ethernet7": {
            "lanes": "1,2,3,4",
            "alias": "fortyGigE0/24",
            "index": "6",
            "speed": "40000"
        },
        "Ethernet8": {
            "lanes": "5,6,7,8",
            "alias": "fortyGigE0/28",
            "index": "7",
            "speed": "40000"
        },

        "Ethernet9": {
            "lanes": "13,14,15,16",
            "alias": "fortyGigE0/32",
            "index": "8",
            "speed": "40000"
        },
        "Ethernet10": {
            "lanes": "9,10,11,12",
            "alias": "fortyGigE0/36",
            "index": "9",
            "speed": "40000"
        },
        "Ethernet11": {
            "lanes": "17,18,19,20",
            "alias": "fortyGigE0/40",
            "index": "10",
            "speed": "40000"
        },
        "Ethernet12": {
            "lanes": "21,22,23,24",
            "alias": "fortyGigE0/44",
            "index": "11",
            "speed": "40000"
        },
        "Ethernet13": {
            "lanes": "53,54,55,56",
            "alias": "fortyGigE0/48",
            "index": "12",
            "speed": "40000"
        },
        "Ethernet14": {
            "lanes": "49,50,51,52",
            "alias": "fortyGigE0/52",
            "index": "13",
            "speed": "40000"
        },
        "Ethernet15": {
            "lanes": "57,58,59,60",
            "alias": "fortyGigE0/56",
            "index": "14",
            "speed": "40000"
        },
        "Ethernet16": {
            "lanes": "61,62,63,64",
            "alias": "fortyGigE0/60",
            "index": "15",
            "speed": "40000"
        },
        "Ethernet17": {
            "lanes": "69,70,71,72",
            "alias": "fortyGigE0/64",
            "index": "16",
            "speed": "40000"
        },
        "Ethernet18": {
            "lanes": "65,66,67,68",
            "alias": "fortyGigE0/68",
            "index": "17",
            "speed": "40000"
        },
        "Ethernet19": {
            "lanes": "73,74,75,76",
            "alias": "fortyGigE0/72",
            "index": "18",
            "speed": "40000"
        },
        "Ethernet20": {
            "lanes": "77,78,79,80",
            "alias": "fortyGigE0/76",
            "index": "19",
            "speed": "40000"
        },
        "Ethernet21": {
            "lanes": "109,110,111,112",
            "alias": "fortyGigE0/80",
            "index": "20",
            "speed": "40000"
        },
        "Ethernet22": {
            "lanes": "105,106,107,108",
            "alias": "fortyGigE0/84",
            "index": "21",
            "speed": "40000"
        },
        "Ethernet23": {
            "lanes": "113,114,115,116",
            "alias": "fortyGigE0/88",
            "index": "22",
            "speed": "40000"
        },
        "Ethernet24": {
            "lanes": "117,118,119,120",
            "alias": "fortyGigE0/92",
            "index": "23",
            "speed": "40000"
        },
        "Ethernet25": {
            "lanes": "125,126,127,128",
            "alias": "fortyGigE0/96",
            "index": "24",
            "speed": "40000"
        },
        "Ethernet26": {
            "lanes": "121,122,123,124",
            "alias": "fortyGigE0/100",
            "index": "25",
            "speed": "40000"
        },
        "Ethernet27": {
            "lanes": "81,82,83,84",
            "alias": "fortyGigE0/104",
            "index": "26",
            "speed": "40000"
        },
        "Ethernet28": {
            "lanes": "85,86,87,88",
            "alias": "fortyGigE0/108",
            "index": "27",
            "speed": "40000"
        },
        "Ethernet29": {
            "lanes": "93,94,95,96",
            "alias": "fortyGigE0/112",
            "index": "28",
            "speed": "40000"
        },
        "Ethernet30": {
            "lanes": "89,90,91,92",
            "alias": "fortyGigE0/116",
            "index": "29",
            "speed": "40000"
        },
        "Ethernet31": {
            "lanes": "101,102,103,104",
            "alias": "fortyGigE0/120",
            "index": "30",
            "speed": "40000"
        },
        "Ethernet32": {
            "lanes": "97,98,99,100",
            "alias": "fortyGigE0/124",
            "index": "31",
            "speed": "40000"
        }
    }
}

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106

Description for the changelog

A picture of a cute animal (not mandatory but encouraged)