Fixed some formatting issues for multi-config injections.

There were some issues with formatting the progress bar and summaries when different mixes of verbose settings and multiple configs were present. Here's what the fixed output looks like:

```
======Fault Injection======
---FI Config #0---
[==================================================>] 100.0% (10 / 10) 
========== SUMMARY ==========
Return codes:
    0:     7
    2:     3

---FI Config #1---
[==================================================>] 100.0% (5 / 5) 
========== SUMMARY ==========
Return codes:
    0:     4
    2:     1
```