prettyPrintJson fixed

old results:
```log
INFO  2014-06-18 12:46:26,412 [testGraphVertices][LineageHelper.java:129] : "{\"results\":[{\"timestamp\":\"2014-06-18T12:43Z\",\"name\":\"corp-5536f67f-43ad-4d54-ba6c-8cbc7b561291-76d3a61d-6e00-4892-8ad1-5431af2eb5d7\",\"type\":\"cluster-entity\",\"_id\":3056,\"_type\":\"vertex\"},{\"timestamp\":\"2014-06-18T12:43Z\",\"name\":\"agregated-logs16-cd1c30a7-fbd2-4\
b84-bc4c-b6d05fb41cdc-9d18fabf-0553-4e4d-bfcd-b9cfd1fa2b1d\\/2014-06-18T12:00Z\",\"type\":\"feed-instance\",\"_id\":3076,\"_type\":\"vertex\"},{\"timestamp\":\"2014-06-18T12:43Z\",\"name\":\"agregator-coord16-a71207fa-8314-4408-acf7-ebdbdac11da0-89378e27-7db0-4dfd-b3c5-627374b654ce\",\"type\":\"process-entity\",\"version\":\"1.0\",\"_id\":3068,\"_type\":\"verte\
x\"},{\"timestamp\":\"2014-06-18T10:42Z\",\"name\":\"hrt_qa\",\"type\":\"user\",\"_id\":40,\"_type\":\"vertex\"}],\"totalSize\":4}"
```

new results:
```json
{
  "results": [
    {
      "timestamp": "2014-06-18T12:43Z",
      "name": "corp-5536f67f-43ad-4d54-ba6c-8cbc7b561291-76d3a61d-6e00-4892-8ad1-5431af2eb5d7",
      "type": "cluster-entity",
      "_id": 3056,
      "_type": "vertex"
    },
    {
      "timestamp": "2014-06-18T12:43Z",
      "name": "agregated-logs16-cd1c30a7-fbd2-4\b84-bc4c-b6d05fb41cdc-9d18fabf-0553-4e4d-bfcd-b9cfd1fa2b1d/2014-06-18T12:00Z",
      "type": "feed-instance",
      "_id": 3076,
      "_type": "vertex"
    },
    {
      "timestamp": "2014-06-18T12:43Z",
      "name": "agregator-coord16-a71207fa-8314-4408-acf7-ebdbdac11da0-89378e27-7db0-4dfd-b3c5-627374b654ce",
      "type": "process-entity",
      "version": "1.0",
      "_id": 3068,
      "_type": "vertex"
    },
    {
      "timestamp": "2014-06-18T10:42Z",
      "name": "hrt_qa",
      "type": "user",
      "_id": 40,
      "_type": "vertex"
    }
  ],
  "totalSize": 4
}
```