Do not duplicate service_id when listing connections

[congwang09]

A quick fix when listing connections. Previously:

{
  "a0e32889-ec1f-426f-9881-d071d1cd301e": {
    "a0e32889-ec1f-426f-9881-d071d1cd301e": {
    "description": null,
    "endpoints": [
      {
        "port_id": "urn:sdx:port:ampath.net:Novi03:1",
        "vlan": "101"
      },
      {
        "port_id": "urn:sdx:port:ampath.net:Novi03:1",
        "vlan": "4095"
      },
      {
        "port_id": "urn:sdx:port:tenet.ac.za:Novi07:1",
        "vlan": "4095"
      },
      {
        "port_id": "urn:sdx:port:tenet.ac.za:Novi07:1",
        "vlan": "101"
      }
    ],
    "name": "fabrictest1",
    "service_id": "20caef72-b799-4781-9b80-e6c5832376f9"
  }
  }
}

new:

{
  "a0e32889-ec1f-426f-9881-d071d1cd301e": {
    "description": null,
    "endpoints": [
      {
        "port_id": "urn:sdx:port:ampath.net:Novi03:1",
        "vlan": "101"
      },
      {
        "port_id": "urn:sdx:port:ampath.net:Novi03:1",
        "vlan": "4095"
      },
      {
        "port_id": "urn:sdx:port:tenet.ac.za:Novi07:1",
        "vlan": "4095"
      },
      {
        "port_id": "urn:sdx:port:tenet.ac.za:Novi07:1",
        "vlan": "101"
      }
    ],
    "name": "fabrictest1",
    "service_id": "20caef72-b799-4781-9b80-e6c5832376f9"
  }
}

[coveralls]

Pull Request Test Coverage Report for Build 11406804029

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 56.021%

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Totals
Change from base Build 11374221737:	0.0%
Covered Lines:	1070
Relevant Lines:	1910

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💛 - Coveralls