Fix: duplicate PreloadFilePath value

This is to fix the issue: #85

Actual behavior

We have duplicate PreloadFilePath fields in the response.

Expected behavior

Description:

Issue: osdu/data/data-definitions#60 (moved)

Fix:

The problem in the code is created by the first letter uppercase: while accessing the field named PreloadFilePath the json property is expecting field to follow Java naming convention for a variable. It should be corrected to preloadFilePath. This is the reason why metadata response contains duplicate fields. Please refer the above issue link for more clarity.

Changes include:

• Bugfix (a non-breaking change that solves an issue).

Changes in:

• Common code

Dev Checklist:

• Existing Tests pass
• Verified functionality locally