Viktor Kolomeyko 95de18b1ca
ENT-2500: Improve formatting when no traffic flown through Bridge. (#1447)
Without this change the following output can be observed:
```
...
Traffic breakdown:
	Successful connections in:

	Successful connections out:

	Failed connections in:

	Failed connections out:

	Accepted packets in:

	Accepted packets out:

	Dropped packets in:

	Dropped packets out:
```
2018-10-04 13:59:07 +01:00
..