ScalingReport format tests fail locally on decimal format

The recently introduced scaling event format tests fail locally due to different decimal format:

```
[ERROR]   AutoScalerEventHandlerTest.testScalingReport:55
expected: "Scaling execution enabled, begin scaling vertices:{ Vertex ID ea632d67b7d595e5b851708ae9ad79d6 | Parallelism 3 -> 1 | Processing capacity 424.68 -> 123.40 | Target data rate 403.67}

{ Vertex ID bc764cd8ddf7a0cff126f51c16239658 | Parallelism 4 -> 2 | Processing capacity Infinity -> Infinity | Target data rate 812.58}

{ Vertex ID 0a448493b4782967b150582570326227 | Parallelism 5 -> 8 | Processing capacity 404.73 -> 645.00 | Target data rate 404.27}"
 but was: "Scaling execution enabled, begin scaling vertices:{ Vertex ID ea632d67b7d595e5b851708ae9ad79d6 | Parallelism 3 -> 1 | Processing capacity 424,68 -> 123,40 | Target data rate 403,67}

{ Vertex ID bc764cd8ddf7a0cff126f51c16239658 | Parallelism 4 -> 2 | Processing capacity Infinity -> Infinity | Target data rate 812,58}

{ Vertex ID 0a448493b4782967b150582570326227 | Parallelism 5 -> 8 | Processing capacity 404,73 -> 645,00 | Target data rate 404,27}"
[INFO]
```