Boaz Leskes b605184471 Recovery: add total operations to the _recovery API
This commit adds the current total number of translog operations to the recovery reporting API. We also expose the recovered / total percentage:

```
"translog": {
   "recovered": 536,
   "total": 986,
   "percent": "54.3%",
   "total_time": "2ms",
   "total_time_in_millis": 2
},
```

Closes #9368
Closes #10042
2015-03-17 07:31:29 -07:00
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2015-02-27 11:09:52 -08:00
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