18F guides dns updates

[echappen]

This is part of 18F guides migration work, following these steps and using this example.

These are not new sites, just updates to existing sites.

• [ ] This is a new public-facing site (if so, please follow the additional instructions below)
  • [ ] Provide context
  • [ ] Assign to @18F/osc for review
  • [ ] TTS Digital Council's new site review process completed
  • [ ] Update the inventory with new site information

[echappen]

Closing in favor of #672 and #673