[WIP] control-plane-agent: add FRUIDs to component details (good version)

[hawkw]

Closes #2217
Closes #2212

[hawkw]

Minimum Viable FRUID for sharkfin VPD EEPROMs works:

eliza@castle ~ $ eliza@castle ~ rack:berlin $ FAUX_MGS=./faux-mgs-vpd pilot sp exec -e '--json=pretty component-details J212/U7' BRM42220011
Sep 11 17:12:05.682 INFO creating SP handle on interface berlin_sw0tp0, component: faux-mgs
Sep 11 17:12:05.687 INFO initial discovery complete, addr: [fe80::aa40:25ff:fe04:201%12]:11111, interface: berlin_sw0tp0, socket: control-plane-agent, component: faux-mgs
{
  "berlin_sw0tp0": {
    "Ok": {
      "entries": [
        {
          "kind": "OxideVpd",
          "part_number": "913-0000021",
          "rev": 1,
          "serial": "BRM39220579"
        }
      ]
    }
  }
}%                                                                                                                                                                                                                                                                                eliza@castle ~ $

[hawkw]

PMBus works now too:

eliza@niles ~ $ pilot sp -i axf8 exec -e 'component-details PSU1' BRM11230004
Sep 15 16:49:47.537 INFO creating SP handle on interface axf8, component: faux-mgs
Sep 15 16:49:47.539 INFO initial discovery complete, addr: [fe80::aa40:25ff:fe06:119%28]:11111, interface: axf8, socket: control-plane-agent, component: faux-mgs
Measurement(Measurement { name: "psu1mcu", kind: Temperature, value: Ok(23.25) })
Measurement(Measurement { name: "psu1mcu", kind: Temperature, value: Ok(30.0) })
Measurement(Measurement { name: "psu1mcu", kind: Temperature, value: Ok(28.125) })
Measurement(Measurement { name: "V54_PSU1", kind: Current, value: Ok(5.125) })
Measurement(Measurement { name: "V12_PSU1", kind: Current, value: Ok(0.046875) })
Measurement(Measurement { name: "V54_PSU1", kind: Voltage, value: Ok(54.554688) })
Measurement(Measurement { name: "V12_PSU1", kind: Voltage, value: Ok(12.046875) })
Measurement(Measurement { name: "V54_PSU1", kind: InputCurrent, value: Ok(1.2578125) })
Measurement(Measurement { name: "V12_PSU1", kind: InputCurrent, value: Ok(1.2578125) })
Measurement(Measurement { name: "V54_PSU1", kind: InputVoltage, value: Ok(243.75) })
Measurement(Measurement { name: "V12_PSU1", kind: InputVoltage, value: Ok(243.75) })
Measurement(Measurement { name: "psu1mcu", kind: Speed, value: Ok(8288.0) })
Measurement(Measurement { name: "psu1mcu", kind: Speed, value: Ok(6688.0) })
Vpd(Mfg(MfgVpd { mfg: "Murata-PS", serial: "LL2420RF000D", mfg_rev: "0762-0701-0000", mpn: "MWOCP68-3600-D-RM" }))