cmd/tailscale/cli: stabilise the output of `tailscale lock status --json`

This patch stabilises the JSON output, and improves it in the following
ways:

* The AUM hash in Head uses the base32-encoded form of an AUM hash,
  consistent with how it's presented elsewhere
* TrustedKeys are the same format as the keys as `tailnet lock log --json`
* SigKind, Pubkey and KeyID are all presented consistently with other
  JSON output in NodeKeySignature
* FilteredPeers don't have a NodeKeySignature, because it will always
  be empty

For reference, here's the JSON output from the CLI prior to this change:

```json
{
  "Enabled": true,
  "Head": [
    196,
    69,
    63,
    243,
    213,
    133,
    123,
    46,
    183,
    203,
    143,
    34,
    184,
    85,
    80,
    1,
    221,
    92,
    49,
    213,
    93,
    106,
    5,
    206,
    176,
    250,
    58,
    165,
    155,
    136,
    11,
    13
  ],
  "PublicKey": "nlpub:0f99af5c02216193963ce9304bb4ca418846eddebe237f37a6de1c59097ed0b8",
  "NodeKey": "nodekey:8abfe98b38151748919f6e346ad16436201c3ecd453b01e9d6d3a38e1826000d",
  "NodeKeySigned": true,
  "NodeKeySignature": {
    "SigKind": 1,
    "Pubkey": "bnCKv+mLOBUXSJGfbjRq0WQ2IBw+zUU7AenW06OOGCYADQ==",
    "KeyID": "D5mvXAIhYZOWPOkwS7TKQYhG7d6+I383pt4cWQl+0Lg=",
    "Signature": "4DPW4v6MyLLwQ8AMDm27BVDGABjeC9gg1EfqRdKgzVXi/mJDwY9PTAoX0+0WTRs5SUksWjY0u1CLxq5xgjFGBA==",
    "Nested": null,
    "WrappingPubkey": "D5mvXAIhYZOWPOkwS7TKQYhG7d6+I383pt4cWQl+0Lg="
  },
  "TrustedKeys": [
    {
      "Key": "nlpub:0f99af5c02216193963ce9304bb4ca418846eddebe237f37a6de1c59097ed0b8",
      "Metadata": null,
      "Votes": 1
    },
    {
      "Key": "nlpub:de2254c040e728140d92bc967d51284e9daea103a28a97a215694c5bda2128b8",
      "Metadata": null,
      "Votes": 1
    }
  ],
  "VisiblePeers": [
    {
      "Name": "signing2.taila62b.unknown.c.ts.net.",
      "ID": 7525920332164264,
      "StableID": "nRX6TbAWm121DEVEL",
      "TailscaleIPs": [
        "100.110.67.20",
        "fd7a:115c:a1e0::9c01:4314"
      ],
      "NodeKey": "nodekey:10bf4a5c168051d700a29123cd81568377849da458abef4b328794ca9cae4313",
      "NodeKeySignature": {
        "SigKind": 1,
        "Pubkey": "bnAQv0pcFoBR1wCikSPNgVaDd4SdpFir70syh5TKnK5DEw==",
        "KeyID": "D5mvXAIhYZOWPOkwS7TKQYhG7d6+I383pt4cWQl+0Lg=",
        "Signature": "h9fhwHiNdkTqOGVQNdW6AVFoio6MFaFobPiK9ydywgmtYxcExJ38b76Tabdc56aNLxf8IfCaRw2VYPcQG2J/AA==",
        "Nested": null,
        "WrappingPubkey": "3iJUwEDnKBQNkryWfVEoTp2uoQOiipeiFWlMW9ohKLg="
      }
    }
  ],
  "FilteredPeers": [
    {
      "Name": "node3.taila62b.unknown.c.ts.net.",
      "ID": 5200614049042386,
      "StableID": "n3jAr7KNch11DEVEL",
      "TailscaleIPs": [
        "100.95.29.124",
        "fd7a:115c:a1e0::f901:1d7c"
      ],
      "NodeKey": "nodekey:454d2c8602c10574c5ec3a6790f159714802012b7b8bb8d2ab47d637f9df1d7b",
      "NodeKeySignature": {
        "SigKind": 0,
        "Pubkey": null,
        "KeyID": null,
        "Signature": null,
        "Nested": null,
        "WrappingPubkey": null
      }
    }
  ],
  "StateID": 16885615198276932820
}
```

Updates https://github.com/tailscale/corp/issues/22355
Updates https://github.com/tailscale/tailscale/issues/17619

Signed-off-by: Alex Chan <alexc@tailscale.com>

Change-Id: I65b58ff4520033e6b70fc3b1ba7fc91c1f70a960

0 files changed, 0 insertions, 0 deletions