Enable White-Listing of IP addresses and self-hosted build agents

All Submissions:

[YES] Have you followed the guidelines in our Contributing document?
[YES] Have you added an explanation of what your changes do and why you'd like us to include them?
[YES] I have updated the documentation accordingly.
[YES] I have added tests to cover my changes.
[YES] All new and existing tests passed.
[YES] My code follows the code style of this project.
[YES] I ran lint checks locally prior to submission.
[YES] Have you checked to ensure there aren't other open Pull Requests for the same update/change?

We're allowing IP address white listing resource attributes to be populated.

Issue Number: 242