REST API Method implementation for ConfigResources Controller

[zack-rma]

Problem Description

Fixes #222.

Retrieval methods for PlatformConfigs returned empty DTOs.

Solution

Updated methods to return properly filled data objects.

how you tested the change

Tested in REST API against OpenTSDB instance.

Where the following done:

• Tests. Check all that apply:
  • Unit tests created or modified that run during ant test.
  • Integration tests created or modified that run during integration testing
    (Formerly called regression tests.)
  • Test procedure descriptions for manual testing
• Was relevant documentation updated?
• Were relevant config element (e.g. XML data) updated as appropriate

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