[swagger bug] with google/protobuf/wrappers.proto

[jinleileiking]

My pb:

  116 message UpdatePubNotifyURLConfigRequest {¬
  117     string App            = 1 [(validator.field) = {string_not_empty: true}];¬
  118     string Pubdomain      = 2 [(validator.field) = {string_not_empty: true}];¬
  119     google.protobuf.Int32Value  Notify           = 3;¬
  120     google.protobuf.StringValue StartNotifyURL = 4;¬
  121     google.protobuf.StringValue EndNotifyURL   = 5;¬
  122 }¬

The response generated by swagger in example request:

{
  "App": "string",
  "Pubdomain": "string",
  "Notify": {
    "value": 0
  },
  "StartNotifyURL": {
    "value": "string"
  },
  "EndNotifyURL": {
    "value": "string"
  }
}

In real response , it will be:

{
  "App": "string",
  "Pubdomain": "string",
  "Notify":  0,
  "StartNotifyURL": "string",
  "EndNotifyURL":  "string"
}

[achew22]

After #412 lands, we box/unbox the *Value types. If you would like to take that patch and extend it to have a test I'd be very happy to merge it. I'm going to close this since that PR tracks the work slightly better.