[vs]: generate port table in config db for virtual switch

[lguohan]

Signed-off-by: Guohan Lu gulv@microsoft.com

- What I did

- How I did it

- How to verify it

root@c32f9d2d6814:/# sonic-cfggen -d --var-json "PORT"
{
    "Ethernet8": {
        "alias": "fortyGigE0/8", 
        "lanes": "37,38,39,40"
    }, 
    "Ethernet0": {
        "alias": "fortyGigE0/0", 
        "lanes": "29,30,31,32"
    }, 
    "Ethernet4": {
        "alias": "fortyGigE0/4", 
        "lanes": "25,26,27,28"
    }, 
    "Ethernet108": {
        "alias": "fortyGigE0/108", 
        "lanes": "81,82,83,84"
    }, 
    "Ethernet100": {
        "alias": "fortyGigE0/100", 
        "lanes": "125,126,127,128"
    }, 
    "Ethernet104": {
        "alias": "fortyGigE0/104", 
        "lanes": "85,86,87,88"
    }, 
    "Ethernet96": {
        "alias": "fortyGigE0/96", 
        "lanes": "121,122,123,124"
    }, 
    "Ethernet124": {
        "alias": "fortyGigE0/124", 
        "lanes": "101,102,103,104"
    }, 
    "Ethernet92": {
        "alias": "fortyGigE0/92", 
        "lanes": "113,114,115,116"
    }, 
    "Ethernet120": {
        "alias": "fortyGigE0/120", 
        "lanes": "97,98,99,100"
    }, 
    "Ethernet52": {
        "alias": "fortyGigE0/52", 
        "lanes": "53,54,55,56"
    }, 
    "Ethernet56": {
        "alias": "fortyGigE0/56", 
        "lanes": "61,62,63,64"
    }, 
    "Ethernet76": {
        "alias": "fortyGigE0/76", 
        "lanes": "73,74,75,76"
    }, 
    "Ethernet72": {
        "alias": "fortyGigE0/72", 
        "lanes": "77,78,79,80"
    }, 
    "Ethernet64": {
        "alias": "fortyGigE0/64", 
        "lanes": "65,66,67,68"
    }, 
    "Ethernet32": {
        "alias": "fortyGigE0/32", 
        "lanes": "9,10,11,12"
    }, 
    "Ethernet16": {
        "alias": "fortyGigE0/16", 
        "lanes": "41,42,43,44"
    }, 
    "Ethernet36": {
        "alias": "fortyGigE0/36", 
        "lanes": "13,14,15,16"
    }, 
    "Ethernet12": {
        "alias": "fortyGigE0/12", 
        "lanes": "33,34,35,36"
    }, 
    "Ethernet88": {
        "alias": "fortyGigE0/88", 
        "lanes": "117,118,119,120"
    }, 
    "Ethernet24": {
        "alias": "fortyGigE0/24", 
        "lanes": "5,6,7,8"
    }, 
    "Ethernet116": {
        "alias": "fortyGigE0/116", 
        "lanes": "93,94,95,96"
    }, 
    "Ethernet80": {
        "alias": "fortyGigE0/80", 
        "lanes": "105,106,107,108"
    }, 
    "Ethernet112": {
        "alias": "fortyGigE0/112", 
        "lanes": "89,90,91,92"
    }, 
    "Ethernet84": {
        "alias": "fortyGigE0/84", 
        "lanes": "109,110,111,112"
    }, 
    "Ethernet48": {
        "alias": "fortyGigE0/48", 
        "lanes": "49,50,51,52"
    }, 
    "Ethernet44": {
        "alias": "fortyGigE0/44", 
        "lanes": "17,18,19,20"
    }, 
    "Ethernet40": {
        "alias": "fortyGigE0/40", 
        "lanes": "21,22,23,24"
    }, 
    "Ethernet28": {
        "alias": "fortyGigE0/28", 
        "lanes": "1,2,3,4"
    }, 
    "Ethernet60": {
        "alias": "fortyGigE0/60", 
        "lanes": "57,58,59,60"
    }, 
    "Ethernet20": {
        "alias": "fortyGigE0/20", 
        "lanes": "45,46,47,48"
    }, 
    "Ethernet68": {
        "alias": "fortyGigE0/68", 
        "lanes": "69,70,71,72"
    }
}

- Description for the changelog

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