Anomaly drill down graphs only display integer values

[Amatullah]

The data points present in all the anomaly prediction graphs are all integers even when they are meant to be float.

Chaos Genius version: 0.1.2-alpha
OS Version / Instance: AWS EC2
Deployment type: Docker

Current behavior
As you can see from the screenshots, the values are all integers which is the wrong output.

Expected behavior
The actual output is shown in the screenshots below. Values are now of the correct type : float.

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[suranah]

Thanks for finding and fixing this, @Amatullah