Support the new protocol node format:

[bneradt]

"sessions": [
    {
        "protocol": [
            {
                "name": "http",
                "version": "2"
            },
            {
                "name": "tls",
                "version": "TLSv1.2",
                "sni": "www.tls.com",
                "proxy-verify-mode": 0,
                "proxy-provided-cert": true
            },
            {
                "name": "tcp"
            },
            {
                "name": "ip",
                "version": "4"
            }
        ],

...

                "proxy-request": {
                    "protocol": [
                        {
                            "name": "http",
                            "version": "1.1"
                        },
                        {
                            "name": "tls",
                            "version": "TLSv1.2",
                            "sni": "www.tls.com",
                            "proxy-verify-mode": 1,
                            "proxy-provided-cert": false
                        },
                        {
                            "name": "tcp"
                        },
                        {
                            "name": "ip",
                            "version": "4"
                        }
                    ],

I confirm that this contribution is made under the terms of the license found in the root directory of this repository's source tree and that I have the authority necessary to make this contribution on behalf of its copyright owner.

[SolidWallOfCode]

Do you really want a list instead of a map? I think it's fundamental that none of the protocol stack tags will be duplicated. E.g.

"protocol": {
  "http" : {
    "version": "1.1"
  },
  "tls": {
    "version": "TLSv1.2",
    "sni": "delain.nl"
...

[bneradt]

Do you really want a list instead of a map? I think it's fundamental that none of the protocol stack tags will be duplicated. E.g.

"protocol": {
  "http" : {
    "version": "1.1"
  },
  "tls": {
    "version": "TLSv1.2",
    "sni": "delain.nl"
...

Keeping it a sequence was Masakazu's influence:
apache/trafficserver#6972

You can see the discussion there. He had some good observations that convinced me that maintaining it as a sequence made sense. Since it is a protocol stack, order matters and technically order is not preserved in a map.