[RFC2737, RFC3433] Exclude RJ45 port from Entity MIB and Entity sensor MIB

[keboliu]

- What I did

RJ45 port will expose the below info to STATE_DB, since there is NO embedded sensor on RJ45 ports, so Entity MIB and Entity sensor MIB should skip the TRANSCEIVER_INFO and TRANSCEIVER_DOM_SENSOR DB entries for RJ45 ports.

  "TRANSCEIVER_INFO|Ethernet2": {
    "type": "RJ45",
    "vendor_rev": "N/A",
    "serial": "N/A",
    "manufacturer": "N/A",
    "model": "N/A",
    "is_replaceable": "N/A"
  },
  "TRANSCEIVER_DOM_SENSOR|Ethernet2": {
    "temperature": "N/A",
    "voltage": "N/A",
    "tx1bias": "N/A",
    "tx2bias": "N/A",
    "tx3bias": "N/A",
    "tx4bias": "N/A",
    "rx1power": "N/A",
    "rx2power": "N/A",
    "rx3power": "N/A",
    "rx4power": "N/A",
    "tx1power": "N/A",
    "tx2power": "N/A",
    "tx3power": "N/A",
    "tx4power": "N/A"
  }

- How I did it
Add logic to detect the type of transceiver, skip RJ45 type.

- How to verify it
run SNMP test on the platforms with RJ45 ports.

- Description for the changelog