add GetAllCamerasByServer api

liuxiaolong

2019-10-11 1b28cea6846f5f3c904ce783f83097f0ee8662e9

 controllers/cameraPolygon.go

@@ -116,7 +116,7 @@
   if flag {
      util.ResponseFormat(c,code.Success,data)
   } else {
      util.ResponseFormat(c,code.ComError,data)
      util.ResponseFormat(c,code.ComError,"更新失败")
   }
}