FIX: used float64 instead of int

[pghildiyal]

Description

Autoscaling.MinReplicas and Autoscaling.MaxReplicas are giving type conversion error -
2021/11/19 10:40:54 http: panic serving 100.114.15.204:47584: interface conversion: interface {} is float64, not int

Fixes # (issue)
As per documentation at https://pkg.go.dev/encoding/json#Unmarshal
unspecified numbers are converted to float64 not int, therefore changed conversion to float64 instead of int.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

This has been tested by updating the test case in ValidatorHelper_test.go

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas