Changes to WaitForADDomain

- BREAKING CHANGE: Refactored the resource to handle timeout better and
  more correctly wait for a specific amount, and at the same time make
  the resource more intuitive to use. This change has replaced parameters
  in the resource (issue dsccommunity#343).
- Now the resource can use built-in `PsDscRunAsCredential` instead of
  specifying the `Credential` parameter (issue dsccommunity#367).
- New parameter `SiteName` can be used to wait for a domain controller
  in a specific site in the domain.

CHANGELOG.md

@@ -41,6 +41,8 @@
       [new helper functions for localization](https://github.com/PowerShell/DscResources/blob/master/StyleGuidelines.md#helper-functions-for-localization)
       ([issue #316](https://github.com/PowerShell/ActiveDirectoryDsc/issues/316),
       [issue #317](https://github.com/PowerShell/ActiveDirectoryDsc/issues/317)).
+    - Added function `Find-DomainController`.
+    - Added function `Get-CurrentUser` (moved from the resource ADKDSKey).
   - Updated all the examples files to be prefixed with the resource
     name so they are more easily discovered in PowerShell Gallery and
     Azure Automation ([issue #416](https://github.com/PowerShell/ActiveDirectoryDsc/issues/416)).
@@ -92,7 +94,15 @@
   - Added comment-based help ([issue #337](https://github.com/PowerShell/ActiveDirectoryDsc/issues/337)).
   - Added integration tests ([issue #348](https://github.com/PowerShell/ActiveDirectoryDsc/issues/348)).
 - Changes to WaitForADDomain
-  - Added comment-based help ([issue #341](https://github.com/PowerShell/ActiveDirectoryDsc/issues/341))
+  - BREAKING CHANGE: Refactored the resource to handle timeout better and
+    more correctly wait for a specific amount, and at the same time make
+    the resource more intuitive to use. This change has replaced parameters
+    in the resource ([issue #343](https://github.com/PowerShell/ActiveDirectoryDsc/issues/343)).
+  - Now the resource can use built-in `PsDscRunAsCredential` instead of
+    specifying the `Credential` parameter ([issue #367](https://github.com/PowerShell/ActiveDirectoryDsc/issues/367)).
+  - New parameter `SiteName` can be used to wait for a domain controller
+    in a specific site in the domain.
+  - Added comment-based help ([issue #341](https://github.com/PowerShell/ActiveDirectoryDsc/issues/341)).
 - Changes to ADDomainController
   - Add support for creating Read-Only Domain Controller (RODC)
     ([issue #40](https://github.com/PowerShell/ActiveDirectoryDsc/issues/40)).